I believe the Wt made a vague kinda, sorta apology regarding 1975 (in print) about 4 years later. It may have been motivated by the fact the number of publishers was declining a bit since 1975.
Yes I remember this they said even some of the Bethel higher ups made wrong assumptions it fell way short of the GB saying Sorry Brothers we were wrong They can;t admit that they were wrong To do so would mean that God is not directing them or if he is then they are not listening. I believe that Franz in COC said he was the one that was asked to compose this quasi apology