That movie, and everything surrounding it, was where it all changed. First, the actual filming and his endless hype just killed the whole vibe and flow of the show for the better part of a year. The fun, "anything goes" anarchy that fueled much of his appeal started to fade, as Howard's focus became getting out the door as soon as he could. And he just never stopped blathering about that stupid movie, it was ceaseless. By the time it finally premiered, regular listeners were begging for it to stop, and looking forward to it being over.
Then it premiered, and during his vacation (I think it was two weeks but I'm not positive) that gay movie came and went with a weak fizzle. It debuted on a Friday, and by Sunday the theaters were empty, and Private Parts was dead and gone a few weeks later. There were no riotous throngs lining up to see it in packed theaters, no one was acting out the dialog in the aisles, and the consensus was that it was a real letdown all around. Stern fans anxiously awaited his return, to see how'd he address the undeniable fact that his much-hyped movie debut was a dud. And he kind of did, but it was weak, and sort of feeble. And that hurt his credibility, as he came across as a cheap carnival barker who'd just fleeced the pigeons again. And while he always was a carny, the show was "edgy" and "wild" enough to give listeners the impression that they were getting something they couldn't get anywhere else. And the movie debacle, and his urge to become a beloved pop-culture figure, killed that.