I'm going against the grain again with all you guys I usually agree with (and seemingly the rest of the baseball world). I don't think it was outrageous.
Drawing a line with the bat where the ball crosses to point out to the ump how far off the pitch was has been widely considered an immediate toss for some time now. The batter didn't do the typical line draw parallel to the plate but if you watch from the pitcher view, he did drop the end of the bat at EXACTLY the spot the ball crossed and then dragged it in a line away from the plate. And, I don't think he did that as part of his routine. So, I could see how the ump would interpret that as the "line-draw, you're gone" scenario. That said, it was a terrible call on the pitch. I'd be too embarrassed to toss the kid - wouldn't want several replays showing how bad I screwed up the strike call.