Complex sentence: Swift was an early television star who hosted "The Popeye Show" from September 10,1956, to September 23,1960, until he was forced to leave the program due to creative differences with station management.
Split into simpler sentences: Swift was an early television star who hosted "The Popeye Show" from September 10,1956 to September 23,1960, until he was forced to leave the program. The reason for his dismissal from "The Popeye Show" was creative differences with station management.