Maguire was 25 yards out when he received the ball from the right wing and, with a burst of pace across his marker, he found space to crack a shot just over.
First he flew into a clumsy challenge on Callum Woods, for which he was fortunate not to be booked, then, having flashed a low shot across goal, he was on the receiving end of a crack on the shin from the Pars player he had up-ended.
Hatton, 26, will be hoping a successful 15th defence will lead to a shot at Kostya Tszyu's IBF title - while it could be the challenger's final crack at the big time.