Ok since you spelled my name right Ill chime in. Ive been doing airshows in my 320 for 10 years and also a few in the legacy. Before I did these I explored spins in both the factory 235 and my 320. I determined that with wing fuel spins might not be recoverable after one turn. also the heavier the engine the worse this would be. Check out the dream catcher video where as he vents the wing fuel  the nose comes above the horizon. After I talked with mike I think he stopped spinning . All aerobatics I do are done so as to avoid the possibility of spinning.
dave