Jack hadn't quite expected the Master to lash out like that. He momentarily tightened his hold but decided it might be better to take a more direct route. It'd make him feel better, anyway. Without a word, Jack released him, but just as soon as he was loose, clubbed the Master in the back of the head with the side of his fist.

"The more you struggle, the less pleasant this whole experience is going to be," he growled. With a sympathetic look, he glanced to the Doctor. God that looked painful. "You going to be okay over there?"