Dear Youdont,
1) You are still not answering how Rav Moshe can pass it off as his old opinion, if it is being publicized here for the first time.
2) Do you think that the Brooklyn and Manhattan Teshuvos in chelek aleph are not one concept, applying to both?
3) I am not leaving anything out. It doesn’t matter all the other points, if one of us has his opinion completely wrong.
4) You have been on this diyuk from the beginning so I’ll address it. Are you reading ‘psak din barrur’, to mean that Rav Moshe wasn’t clear about this? From the context, it is clear that he is not telling them they are not allowed to follow anyone else. But if he was giving them a psak din barrur, then he is saying they would be wrong to follow other Rabbonim.