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This is apparently the one that Isaac Hays (Chef) left because of.
quote:
Originally posted by wikipedia
On March 13, 2006, Isaac Hayes was reported to have quit South Park over objections to the show's attitudes toward and depiction of various religions, claiming that the show had crossed the line from satire into intolerance. Despite the content of the official press release, however, there remains considerable speculation about the motivations behind his departure. Parker and Stone assert that he quit due to the controversial episode "Trapped in the Closet", and its treatment of Scientology, as Hayes was a member. Series co-creator and writer Matt Stone commented in a manner that suggested that Hayes practiced a double standard regarding the treatment of religion on South Park: "[We] never heard a peep out of Isaac in any way until we did Scientology. He wants a different standard for religions other than his own, and to me, that is where intolerance and bigotry begin." [1] Others have suggested that Hayes left the show because of the external pressure forced by his fellow Scientologists and that the decision was not voluntary. It was eventually reported, however, that Hayes did not quit the show, but that the original press release announcing his departure was put out by someone who was not authorized to represent him. As recently as January 4, 2006, Hayes defended South Park's style of controversial humor to The Onion's AV Club and XM's Opie and Anthony Show, going so far as to note that although he was not pleased with the show's depiction of Scientology, he "understand[s] what [Matt and Trey] are doing." It has also been reported that Hayes suffered a stroke in the middle of January 2006 and may not have been in a position to make major decisions for himself. The author or authors of the original press release remain unclear.
On August 10, 2008, Hayes died of a stroke at his home in Memphis, Tennessee, ending any possibility of Chef's return to the show.[2][3][4]