Here’s what makes the punt at the end even more confusing

In the 3rd quarter, Kiffin lined up to go for it on 4th down at the LSU 27. They committed a penalty and ended up punting, but he clearly trusted his offense to pick up a yard and his defense not to give up a TD on a short field.

So why punt at the end of the game where you basically are just buying yourself 20 or so yards of extra field position instead of ending the game?