[nickrego]

If the ball hits the bat a second time while the batter is holding the bat over fair territory, you have Interference. (need to know number of outs & runners for the ruling) The batter is responsible for not hitting the ball a second time. Yes it was an accident, but like Interference, the event is the event. The bat was in the control of the batter on this play. You can not apply the rules of a loose bat rolling around on the ground.

If the ball hits the bat a second time while the batter is holding the bat in foul territory, then you have a Foul Ball.