To be fair, the dealer was already dead when Dean handed him over. Of course, even if he hadn't been, Dean would have done it anyway. He'd trade the whole house full of dealers to make sure Sam stayed safe. That was just instinct.

Dean let Sam lean on him, glad for his reassuring warmth. Still alive. Dean hadn't gotten him killed. "No, you shouldn't be here. Gonna give you the Impala keys, okay? You go back to the motel and wait for me. I'll get him loose and back where he belongs after you're out of range."