The 4th down play call was fine. FWIW, to me it looks like it was a read play, not a straight called shovel pass. You have Mason going wide and Yates running to the edge and reading the end. OLB is on Mason, End takes Yates so his read is the Shovel to the middle. Hindsight I think the play there is pitch it to Mason. End had Yates so you either pitch out or shovel to the middle. There was traffic all in the middle and Clemson had numbers advantage (we had 6 to block 7). Mason was 1/1 with the freshman LB, I think he wins that battle into the endzone. I wouldn't mind that same play call with Gibbs as the back and Mason as the H back.
Watch Mason and his reaction, he wanted the pitch. It should be cued up to the correct time.
Like others stated, the bad decision was on 1st down. We shouldn't have called timeout, we were moving and they were on their heels. Run up to the line and run Mason or Gibbs up the gut, then call timeout. If we get 2 yards there, then you have 3 play calls to get 2 yards. Instead we didn't go back up the middle until 3rd down so we had one shot at a 2 yard play.