isaac hayes quits south park

isaac hayes has been the voice of chef since 1997, when south park first aired. now hayes has enough of the religious satire and quits.
south park co-creator matt stones says hayes never had a problem with jokes of christians, muslims or jews. but when the show made a parody of the scientology church, to which hayes belongs, he got angry.
there are also rumours about hayes' disgusting recipes and too many hints about going to cooking school.
it is not sure if chef will be dropped from the show.