At 19:39 central time, a Beech F33C crashed while maneuvering during final approach. The pilot and passenger suffered serious injuries. On initial climb the pilot reported the door was open and he wanted to return for landing. The airplane was about 500 feet agl on downwind. When turning base to final the airplane overshot the runway centerline and the controller said the airplane appeared to stall as the pilot maneuvered back to the extended runway centerline.