Of course he said 'yes'. Raylan had given him an option to participate, even though they were in Harlan.

He took the cuffed, limping suspect and brought him over to Raylan's car, giving him a little shove when he seemed to want to try twisting away from Malcolm's grasp. He got him into the backseat and shut the door on him, looking over towards Raylan to see if he was ready to go and took a glance at Tim, to see if he was saying anything to Raylan and what sort of reaction Raylan's face was having to it.