No, he's a businessman. Why continue to pay top dollar for rendered services (like pitching coaching) for a product that more than likely isn't going to fare all that well? Now, I know a lot of people are going to say that Rothschild meant better performances out of the pitchers, so now we can expect lesser performances, and thus fewer wins, which means less money (longer term, though short term if the team is really bad) and therefore letting Rothschild go still costs the team money, but his impact on the pitchers would have to have been monumental in order to make paying him and reaping the benefits of the added production he brought to the staff, and even if the numbers are to be believed (they're not), he certainly wasn't worth anywhere close to enough. That's good business.