Respectfully Dave,  I understand your anger,   but you are out of line with that comment.  You are denigrating the P-63 pilot with no working facts.

We have no idea what happened.  As most air show acts are well choreographed ahead of time I very much doubt it was a case of I'll do with my airplane as I want.

Part of an act gone bad?  Mechanical issue?  Medical event?  Showing off?  We just dont know yet.

One of the lessons I've learned over years of flying light aircraft is that I will give another pilot the benefit of the doubt until evidence shows the contrary. 

Mark K3MSB