[Lucifer hums agreement, because it's the largest understatement he's made this year.]

Yes, well, I was still convinced that you were going to find a way to Cage me here. I've seen how you and the Winchesters sabotage things. So I reacted more violently than was really necessary...

[He gives him an almost contrite look and a head tilt like, 'isn't life funny that way?' and that's as close to remorse as he'll let himself get.]