Did Raymond Franz ever apologise specifically for being part of the GB that promulgated the 1975 Armageddon false prophecy?
He has nothing to apologise for, really. Both Ray Franz and Ed Dunlap (and others) had been fighting this interpretation for quite some time (doing all they could for an honest re-interpretation) of it.
This, and the revolutionary idea that Jesus was mediator for all and that all should keep the memorial was what got them kicked out in their old age without any income security, home, or ties to community.