Yeah of course he's insane, have you seen the machinist? He almost killed himself losing weight for that role, and worst of all no one even saw or cared about that movie and he won no awards for it, what a waste
right after that he started bulking up for batman begins, damn what a psycho
People have this misconception that all things are suppose to ride steady when making a film. Yet in reality its filled with all kinds of turbulence.. similar to that sound byte from Bale. We have this need to always have everything in a picture perfect frame of mind. Frankly when looking at his pedegree as an actor, Bale does have a certain amount of room to speak about getting into an 'actors domain'. If this was an actor like LeBeuf or Lohan I would be thinking differently. However coming from an actor who is above the pack in acting skills and who is seasoned at making films, and who has his reputation riding the line... Im not surprised to hear this..
Plus, in the audio, he states that the guy walked into a filming scene multiple times.. I would image that doing so, would upset the people working on that scene...
Basically the footage has to be dumped because it was ruined, and dumped would also be any decent performance that it might of contained...