He pretty much just sounds like a big cry baby, via ESPN:
"Really, the way the rule reads, you're not supposed to even alter your motion," Ausmus said. "That's the way the rule reads. They don't enforce it. Well, he said if he stops it's an illegal pitch."So is a slide step illegal? Isn't that an alteration of your motion? It's not magic, the ball still leaves his hand and ends up in his father's glove. You watch the ball, you hit the ball.
Quit crying and hit the baseball.