They weren't beaten in LA, glimm, they were whipped and humiliated. Any team in the division round of the playoffs give up 275 yards rushing, most of it up the gut to a backup, good backup though, has their butt whipped and their lunch money taken.
If I were the HC, I would make the team, including coaching staff, watch every play of that game to get ready for the regular season. And I wouldn't say a word during it and after it was, mercifully, over I would say one thing and walk out. "That, gentlemen, is the textbook example of us not doing our job".
I am a big believer in the motivation of the avoidance of pain over gain. I would want them to feel that pain again. It's like a boxer keeping the clippings of all of his losses.