It sounds like he wasn't just having an off day when I saw him. He had a real arrogance about him.
If he carries on riding like that, it's just a matter of time before he's under a bus...
If it looks like a twat, and rides like a twat....we all know what it is. ;-)
I think every day is an off day for him. I did shout at him once when he was doing something dangerous, he just carried on regardless.....