According to the pilot, he leveled the airplane at 8,500 feet for a tandem skydive. When the instructor exited the airplane, the nose pitched up, then the airplane pitched over into a right, descending turn. The pilot assessed the situation and determined that the right horizontal stabilizer was bent.
The airplane took off with its third lift of skydivers for the day. The engine began to run roughly at rotation, and due to the speed of the airplane, and the lack of remaining runway, the pilot elected to continue the takeoff. The pilot initially turned toward a public roadway for a forced landing, but the airplane continued to climb under partial power, so he maneuvered back to the airport for a downwind landing on the runway.