"I doubt I can talk him into anything..." Trick him maybe, push him. He doesn't know, but he'll figure some way to drag him back down to Hell where he belongs... where he won't be able to hurt anyone else. He squares his jaw.

He hadn't exactly expected agreement here, but the fact was... "It's my mess to clean up. I'm not letting anyone else take the fall for me, you know? Not you, not Dean... no one can protect me from this."