At the end of the day, Fred, when he was going through some shit, made claims about everyone else on the show that were false. He even admitted it when he finally got back on air. I'm sure Rich took those lies personally, after carrying the entire show while Fred had his issues with booze and then the throat issues. It's just another in a long line of radio shows that went on for a long time but eventually fizzled out. In reality, that show had ceased to be funny a number of years ago, and they only pulled ratings because the alternatives were so f***ing awful. Maybe the change makes Fred take his job seriously again? Maybe Rich moves to a competitive station and they spew hate at each other? Either way, it's better than mailing it in continually, like that show had been doing for years now.