chopjock,
Along with nigelh, you seem to be defending the indefensible
how can you tell what the bank angles were from a hand held video camera?
there's this nifty little gauge called an AH (that's pilot shorthand for an Artificial Horizon) which shows neat little things like the amount of bank that the aircraft is doing. Pretty close to 90 degrees here and there in the video
Could it be because he is flying the aircraft within it's limitations and his ability.
Some people like to be thrown around during a pleasure flight.
The limitations which prohibit pushovers? Watch at about 2:50, where the beads dangling on the compass go weightless and almost disappear off the top of frame. As a non pilot, you may like to research mast bumping and the catastrophic consequences of such a manouevre.
Then try to preach on a Professional Pilot's forum that such actions are both acceptable, and desired by 'some people'