Simon's relationship with Groening was strained and he left the show in 1993, negotiating a pay-off which saw him receive tens of millions of dollars from the show's revenue each year.
Simons forhold til Groening var anstrengt og han forlod serien i 1993, hvor han fik forhandlet en aftrædelsesordning der gav han millioner af dollar fra seriens indtjening hvert år.