I have witnessed in the past pilots who push the boundaries of an aircraft and their own ability. They have often ended in heap. Don Bullock, in an A26, was one such who defied the display director. He asked for an extra two minutes "why do you want an extra two minutes?" the display director asked. "So I can do a barrel roll at the end of my sequence" NO said the director again.
He did it anyway with 6 people on board, into the valley at Biggin Hill. Irresponsible, over confident and a plain old showoff. Holland and Bullock will be remembered for those. Sadly the people they kill get forgotten somehow.