I know there has to be a pause but still. I don't have a bench shirt, the only times I've seen them in use are meet videos, so I really don't know how hard it is to get the touch. All I say to me it looks really slow, especially in that 900 attempt.
I noticed that leg form too. That does seem irregular. I was thinking along the same lines as LiftBig; with his feet tucked under my lower body I would feel kind of destablized and hard to drive up. I'm guessing that is an old habit and he doesnt want to blow his concentration by trying to change.
Seems like the judges were being a little tough on him since that pause seemed pretty long. I dont have sound on my computer so I could actually hear them give the lifter the OK but I''m guessing he attempted to lift the instant they signalled him and he was at this chest for a while.