Rich, I do agree here, but playing devil's advocate ....
alteration, maybe, but ...all this mumbo jumbo is happening during his 'move' to the plate. You'll see a lot of pitchers in their motion pop their glove with the ball in their hand (quite different, but similar?)
Interruption, maybe, yes, but .... is Clayton Kershaw guilty, too?
Again, just thinking out loud. Again, ... B would probably be the most logical, but ....