To be fair, without being on the UK staff, we'll never know that for certain on every play. I do implore people who wonder to re-watch the games that they can with a stop watch. Check the times.
Sheron did present problems. Inexperience being his biggest. I think many confuse not knowing where to go with the ball with "holding it too long". Throw in a defense that played a bit more aggressive, an OL that didn't hold up any better or worse than typical, and the supposed "best set of play makers UK has ever had" dropping no less than 3 catchable passes and this is what you get.