The Church of Scientology allegedly forced Hayes to quit South Park - 2016-09-15
But now, 10 years later, Hayes' son has revealed to The Hollywood Reporter that his dad did not quit the show because of the Scientology episode.
"What happened was that in January 2006 my dad had a stroke and lost the ability to speak. He really didn't have that much comprehension, and he had to relearn to play the piano and a lot of different things. He was in no position to resign under his own knowledge.
"At the time, everybody around my father was involved in Scientology — his assistants, the core group of people. So someone quit South Park on Isaac Hayes' behalf. We don't know who.