First, the game is still a dog fight so Aybar needs to do what he can to reach base. Not Bush in this instance.
Second, Verlander fields the ball and makes a throw it is an easy out. Not Bush.
Third, Verlander can stare his teammate Guillen down for his antics (that was definitely cause for pitching in.)At this point all courtesy to the opposing pitcher (Verlander) was null and void.
Mike Sciosia runs his program as traditionally as anyone and Aybar should not be criticized in this instance. Pitchers such as Mark Mulder and Curt Schilling agree that the bunt was a smart move in this game and not at all Bush.