[Tru_in_Blu]

Effect: Failure to wear the batting helmet when ordered to do so by the umpire shall cause the player to be removed from the game. Wearing the helmet improperly or removing the helmet during a live ball play and judged by the umpire to be a deliberate act shall cause the violator to be declared out immediately. The ball remains live. Calling a runner out for removing a helmet does not remove force play situations. Umpires should use discretion as to the intent of the rule concerning player safety.

My highlight. Also, a bit of a tricky situation could arise regarding force plays. Removing the helmet does not remove the force play.

Again, it would appear that if a player hits a HR, rendering the ball dead, it would be acceptable for the BR to remove her helmet.