Inverted spin?
I had a very good friend (who is sadly no longer with us) who had Pitts which he flew in his spare time. He used to fly in aerobatic competitions. He went into how he could get out of his aircraft "in extremis" quickly if he ever had to in great detail. He saught good advice from the jumping beans about how they would get out of his Pitts and got his parachute packed regularly by the same professionals.
So, one day he was practicing and his beloved Pitts would not recover from an inverted spin. Over the side he went at his critical height. He landed in a farmer's field and his beloved Pitts entered the ground into a copse nearby. Having apologised to the farmer, he got a taxi home, had four hours kip, and then came to work.
Jimbo believed (like me) that the principle of the 6Ps is always a good starting point.