John_Tullamarine You are right, the Cessna 210 is NOT approved for spinning. Great care is taken in the demonstration to prevent progress beyond the incipient phase. The training manoeuvre described will possibly develop into a spin if IMMEDIATE corrective action is not taken as stated. As for the accident scenario, this is a very common cause of fatals in this country in Cessna 200 series, generally by young CPL's saying "watch this !" as they do a beat-up followed by a wingover, or even just a steep turn after takeoff. The reason for the training manoeuvre is to demonstrate the vicious response of the aircraft in those scenarios and is intended to prevent a future fatality. No pilot who has had this demonstrated will ever place themselves in a potential stall situation with power on. As for the stresses, the aircraft will break into the stall at around 45 to 50 kts IAS and the manoeuvre is controlled so as not to progress beyond 60 degrees AoB, this is far enough to instill respect. Sorry you took this the wrong way, it is not a windup, it is serious stuff and as stated, it is to prevent a future fatality. This is an aircraft characteristic and understanding the good and bad behaviour of the aircraft is important.