Conspiracy theory alert: Maybe he knows more then he is letting on. Brady was propped up by the league, and suddenly another (other) team(s) had enough and brought the issue up with the league. They forced Goodell to do something about it, and he doesn't want to admit they were favoring teams, because that would destroy the brand forever. Brady knows this, and he is willing to take the league down with him because he feels his legacy is being destroyed by a situation forced onto him by the league.