Seen it before, but that guy sounds like he skis 3 weekends a winter.
Hate it when these types of videos come out though, it gives us all a bad rep amongst snowboarders. Still impressive the way the snowboarders handled it. Not saying fighting would have settled it, but they didn't bring any of it upon themselves.
I don't get it though, when I'm on my skis, especially on a trail like that, i'm almost always relaxed and in no fighting mood. Might get a little pissed if someone cuts me off, or bumps into me, but not nearly enough that I'd hit them.