It's a smart play, regardless. Clemson is banking on the refs letting them play, which was a good gamble considering the way they'd been calling the game to that point. Plus, it was probably the last play of the game. Most times, refs are going to let all but the most blatant penalties go in that situation.
Sure. I didn't have a problem with it. You see teams run pick plays all the time amd it is difficult to penalize. I was just amused that Watson was openly admitting they were running a pick play.