Syag > You admit you are lacking information but your response is to tell me to do research.
to recap: I did my research – have read a number of works and heard references from others that all lead to the conclusion that the Rav is a Talmid Chacham. You and others are dismissing him based on some unclear references/rumors/opinions that claim that his views are not just something you do not agree, but unacceptable. I am pointing out that the picture of such a dysfunctional Feinstein family does not make sense and should make you ask yourself a question.
Btw, some introductions mention that a number of Igeres Moshes are addressed to R Tendler. Can someone summarize what topics are in their conversation and how is R Moshe addressing R Tendler?