Complex sentence: Many industry insiders believe, it was not because of his actions against Stossel, rather, Schults was fired for challenging Mr. T to a fight backstage at a WWF show at Madison Square Garden.
Split into simpler sentences: Many industry insiders believe, it was not because of his actions against Stossel. Rather, Schults was fired for challenging Mr. T to a fight backstage at a WWF show at Madison Square Garden.