I was told by Marion Dunlap (and I am sure he got it from his brother Ed Dunlap) that there were indeed stories about Freddy on the gay issue.
They were especially due to the habit Freddy had of having a little favorite clicque of about half a dozen young bethel guys and having little "hot tub parties" with them in the spa. Supposedly he was giving his hand picked crew some of his deep spiritual insight - but a lot of Bethel people at the time (1970s) thought it really looked odd. Freddy was, of course, too high up to be challenged on the appearances of it. Marion's take on it was that Freddy was likely an asexual celibate for the most part but with definate homosexual tendencies.
Homosexuality became sort of the "big taboo" at Bethel in the 70s because of a scandal involving up to probably a dozen people. If I recall correctly, the Bethel committees at the time did not name "homosexual acts" in the committee records, but rather called it "covetousness" or some such so as to not leave too obvious a paper trail.
And, of course, the thing with GB members Chitty & Greenlees was common knowledge among the elders but still the subject of a general attempt to cover it up.