Dean looked over to Sam, heading back to the trunk to collect things they might need. He already had a knife out, and the rope he brought over was just to keep the guy tied to the chair.
"You take first bat, Sammy, I'll get him secure." With that said, Dean just started tying Calhoun to the chair. He wasn't planning on letting this one go, and it'd be damn fun to let off some steam too.