Be careful out there, I cringe when I hear stories like the one above!
Reminds me of an "alleged" event where the instructor and student conducted a claimed forty (40 ) turn spin from 10,000 ft in a Cessna 152 with a video camera recording the whole manoeuvre. The same aircraft was later well known for dropping the left wing very sharply at point of stall clean and with flap down. A maintenance inspection reportedly discovered a serious rigging discrepency. Question for the experts. Could the forces involved in numerous turns of a spin eventually lead to a rigging problem?