If you're going to QB sneak, you do it quickly. It really was more of a QB draw, which would be extremely strange to call. I wonder if Lee panicked and ran for it, which is strange considering how often he would give up an open field run for a pass into coverage at other times.
I don't think Lee should have run with it, but I like that Mullen is trusting his players' judgment and publicly stating it. He's gotta keep the team together and doesn't want to turn players against each other. It's a way of saying to the players that the topic is not up for discussion and we move on to next week.
Lee had the choice of handing off to the fullback, or running the option to the outside. He pulled the ball away from the fullback, but then he thought he saw a seam.
I just wish he had stuck the ball out on his way down.