There are normal control surfaces which are the main ones that move when moving the controls. Then there are tabs on each surface. These tabs are for trim, and they are used by the autopilot. So your main control surfaces were not in their correct position, and to compensate, your autopilot was trying to keep the aircraft flying normally by adjusting the trim tabs. As soon as AP was switched off, Trim tabs went to their neutral position, and the aircraft lost control.
Normally in this kind of situation, you would need to check your hardware calibration, because something is causing the aircraft to lose control. I see nothing wrong in your log file, so this is definitely something to do with your hardware.
You could also check your trim tab position on the centre G1000 display...lower left. They should be close to centre for all tabs.