Option 1:

If Bobby is meet by ghost of their mite-hockey coach on Christmas break and the ghost coach tells Bobby he's forgotten the right way to play and Bobby punches the ghost straight in the face. Obviously the punch goes through the ghost but that wouldn't stop Bobby form keep trying. while Bobby is throwing haymakers he goes off yelling about how he plays hockey the right way, Just like the coach had taught Bobby. You see Bobby is a old school tough hockey who always on the ice going to the dirty parts and playing the right way. So how dare anyone tell him otherwise. Bobby isn't a pre Madonna who has to be flash he's a simple smash mouth hockey player. Bobby is never afraid to block shots, throw hits, screen the goalie and do the dirty work in the corner. That's why Bobby would go off  being so upset and its because he's so offended.