Let us put ourselves in the situation of the pilot in this case.
It's a lovely day at the seaside and he decides to do a wingover. On the way down he decides to do a dive at close to Vne and make a dramatic pullout close to the water. He holds onto the dive a little too long and the physics now demands that he crash.
For a fraction of a second before he begins his belated recovery the G meter, the rotor rpm, and the newly installed experimental coning indicator are showing no signs of distress.
Then he starts the recovery, and the dials begin to move, the G meter starts to climb, the engines back off as the rotors are powered by the flare, and the experimental coning indicator recently fitted scuttles up towards whatever maximum it finds. But none of this is any use to our pilot because the crash is still inevitable.
As he sits in the recovery boat, is he running through a bit of over simplified theory, badly remembered from an early lecture on aerodynamics ? No, the only thing ringing in the pilot's head are the words of his crusty old QHI called Κάβουρας giving him a minimum height to commence pullout from a Vne dive.
Good luck with your aerodynamic discussions AnFI, but I think Κάβουρας does understand the important point.