My suspicion is that Golson's shoulder is still gimpy. His out pattern throws were very pedestrian for him and his normal arm strength. I think Kelly obviously knew that and focused on running the ball in the bowl game prep and named Zaire the starter because he's a much better option for that kind of game, the same way Hendrix was a few years ago.
I just don't think Kelly is used to having the raw talent at OL to run over people. Hopefully, the seemingly serendipitous running of the ball down the throat of the SECs best defense will spark something, but we'll have to wait and see.