We'll look into something to protect you. An amulet or something that's not going to catch on things when you're working. I don't know if this is going to be a problem very often, but I know Dean would feel better if you had some extra protection.

Dean's upset with himself, not you. Which, yes, means he's real upset. I'll try to beat some sense into his thick skull. I'm sure that would be easier if Castiel were around, but I'll make do. But it's probably going to come down to you to reassure him when you're able to.