At the time Rabbi Schachter's letter was written, there was no finding against Aharon from any beis din whatsover. The matter of whether a get should be given in this case was jointly brought by both parties to the Baltimore Beis Din, which held several hearings with the participation of both parties. That Beis Din has never ruled that a get should be given. Tamar violated the Baltimore Beis Din's orders regarding dismissing the case from civil court, thereby causing severe damage to Aharon and the parties' child. The Av Beis Din of the Baltimore Beis Din was quoted at the time Rabbi Schachter wrote this letter stating that Aharon had not committed any wrongdoing, and that it was up to Tamar to bring the matter back to the Baltimore Beis Din.
Rabbi Daniel Eidensohn and Rabbi Dovid Eidensohn have written extensively on this blog on the general halachic paramaters of when pressure of various sorts may be brought against a husband to give a get. In addition to violating those general paramaters, the halachic basis of Rabbi Schachter's letter also rests both on the declarations of Rabbi Shmuel Kamenetsky, who has extremely close and longstanding personal and financial ties to Tamar's family and Rabbi Schachter's novel halachic principle derived from "sod Hashem lerauv." This principle is addressed in a document issued by Beis Din Shar Hamishpat, a translation of which is below. This excerpt appears in page 3 of the original document. http://daattorah.blogspot.com/2012/08/bitulseruv-aharon-friedman-rav-gestetner.html
Rabbi Schachter’s letter: What Rabbi Schachter wrote concerning Rabbi’s Kamenetsky’s letter “there already is a sage who’s instructed” makes a mockery and disgrace of the entire Torah. With such a meaningless statement one can erase all the Torah’s prohibitions, and nullify all integrity and justice, and issue decisions according to whatever one likes in contradiction to the Torah. One should wonder whether Rabbi Schachter would follow so blindly after Rabbi Kamenetsky had he instructed him to abandon his family since “there is a sage who has instructed” based on “sod Hashem lerauv” [the secrets of G-d are revealed to those who fear Him, and therefore the statements of such people represent the word of G-d]? Presumably not… But when it comes at the expense of others he has become a great “believer.”
Also, Rabbi Schachter’s pronouncement of “sod Hashem lerauv”is against the poskim who required that psakim [decisions of Jewish Law] be based on actual sources. [See the Mishpatim Yisharim: A judge who says “So it appears to me” and does not base his decision on actual sources is a false judge, and his opinions are worthless….] The pronouncement of “sod Hashem lerauv” shows that Rabbi Kamenetsky’s baseless psak [decision] is a painful mockery and a spewing malignancy. This “sod”[secret] reveals to everyone that Rabbi Kamenetsky has close ties to, and received benefits from, the Epstein family.
Rabbi Schachter’s conclusion “unless it is proven in error” shows that he admits that even though a “sage has instructed already” and “sod Hashem lerauv” if Rabbi Kamenetsky’s decision is proven wrong then that decision is totally worthless. We have already proven in our decision that ta’ah bdevrei mishna [he erred on a fundamental matter] and did so twice: Rabbi Kamenetsky erred in regard to the divorce obligation that he decreed on the husband [even if this was just between him and husband without public embarrassment] that clearly contradicts all poskim as the rule is that if a purported obligation to divorce is imposed on the husband, where no such obligation properly exists, any resulting get would be invalid. And he even more clearly erred when he issued the derogatory letters and the “seruv” against Aharon to permit all to shed his blood, which is considered complete coercion that invalidates any resulting get in this case. And now he should show some integrity and heed his own words and admit in public that there was such an error.
Rabbi Schachter’s letter: What Rabbi Schachter wrote concerning Rabbi’s Kamenetsky’s letter “there already is a sage who’s instructed” makes a mockery and disgrace of the entire Torah. With such a meaningless statement one can erase all the Torah’s prohibitions, and nullify all integrity and justice, and issue decisions according to whatever one likes in contradiction to the Torah. One should wonder whether Rabbi Schachter would follow so blindly after Rabbi Kamenetsky had he instructed him to abandon his family since “there is a sage who has instructed” based on “sod Hashem lerauv” [the secrets of G-d are revealed to those who fear Him, and therefore the statements of such people represent the word of G-d]? Presumably not… But when it comes at the expense of others he has become a great “believer.”
Also, Rabbi Schachter’s pronouncement of “sod Hashem lerauv”is against the poskim who required that psakim [decisions of Jewish Law] be based on actual sources. [See the Mishpatim Yisharim: A judge who says “So it appears to me” and does not base his decision on actual sources is a false judge, and his opinions are worthless….] The pronouncement of “sod Hashem lerauv” shows that Rabbi Kamenetsky’s baseless psak [decision] is a painful mockery and a spewing malignancy. This “sod”[secret] reveals to everyone that Rabbi Kamenetsky has close ties to, and received benefits from, the Epstein family.
Rabbi Schachter’s conclusion “unless it is proven in error” shows that he admits that even though a “sage has instructed already” and “sod Hashem lerauv” if Rabbi Kamenetsky’s decision is proven wrong then that decision is totally worthless. We have already proven in our decision that ta’ah bdevrei mishna [he erred on a fundamental matter] and did so twice: Rabbi Kamenetsky erred in regard to the divorce obligation that he decreed on the husband [even if this was just between him and husband without public embarrassment] that clearly contradicts all poskim as the rule is that if a purported obligation to divorce is imposed on the husband, where no such obligation properly exists, any resulting get would be invalid. And he even more clearly erred when he issued the derogatory letters and the “seruv” against Aharon to permit all to shed his blood, which is considered complete coercion that invalidates any resulting get in this case. And now he should show some integrity and heed his own words and admit in public that there was such an error.
