However this principle becomes problematic when we come to the book of Devarim.
In short, the first four books of the Torah were given directly by G-d, but the fifth book was composed by a godly man who was able to express G-d's views so perfectly hat his words became Torah. Interestingly the Leshem says something similar concerning the views of Chazal - which seriously blurs the distinction between Torah and Rabbinic mitzvos.
I am not sure the readership of this blog is interested in this topic - which many find very disturbing. But it is directly relevant to the other topic - Chabad/Rebbe - concerning which I have received a number of emails saying that they were tired of hearing about it. If there is interest I will be glad to post more on the topic - otherwise I will move in another direction.