In the movie with Greg Kinnear and Willem Defoe it was hinted Crane cut him off after he realized he had bi tendencies.
Incidentally, his son seems pretty anti-Bob Crane, and says his father was a pervert long before that. But he seems biased, and Crane left all his estate to his last wife.
I am really mad at that movie. It ruined that song Girl Watcher by the O'Kaysions for a while. They never should have been allowed to use that song.