BLP reminder 

This is a BLP, and we have to stick very closely to what the reliable sources say.  Let me remind people that the recordings are not authenticated; I know of no reliable source that even mentions them let alone claims to have verified that the voice is Tropper's.  The allegation about the revoked conversion is just that — an allegation; no reliable source states it as a fact.  Even the claim that he was a major player in the Slifkin ban seems to rest mainly on Slifkin's self-published account, which is not a reliable source; I very much doubt that the Jewish Week verified it from an independent source.