Due to transfers/injuries/H&S protocols, UCLA didn't have any/enough defensive linemen. And no, you can't just put an offensive lineman in there. You can't. I know that's what someone is going to suggest, but you can't. A bowl game is supposed to be a reward for a good season. Putting a guy out of position, or even worse, making someone play 2-way because people don't get to watch a bowl game is a punishment. Getting dogged and getting your ass kicked for 3 hours while out of position is a good way for someone to blow an ACL or shred an ankle. As much as it sucks, the right decision was made.