Aliyah to a sinner whose services are needed by the community

Igros Moshe (O.C. II #51) Question: To honor a sinner whose services are needed by many such as a doctor?Answer: Concerning a Jewish doctor who is needed by many and he is a good person who is also generous in giving tzedakah as well as many important favors to the community but he married a non Jewish woman. He was very offended when not given honors for his intermarriage and has distanced himself from the community  The leaders of the community want to know whether they can honor him occasionally to stop the harm that has resulted from his distancing himself? While there is a problem of honoring a sinner because of chanifah, but there is not a prohibition to allow him to open or close the Ark. If he sins only from temptation and not in defiance it is possible to give him an Aliyah.  However there is still the problem of chanifah. Tosfos says this is permitted to avoid danger. It seems that the prohibition of chanifah is that it is understood as saying that that which is prohibited is really permitted. Therefore when it is clear that you are honoring him  to get benefits and not to indicate you agree with his sins this would not constitute chanifa. It would still seem a problem since it is false flattery. However since it is because of peace it is not prohibited. Since the community leaders feel there is an important need for his services it is permitted to honor him with honors other than an aliyah