I kind of feel like I'm getting old saying this - but why wouldn't you wear a helmet if you are doing stuff like that? Especially when one guy whacks himself in the forehead with his gear when it rips!
Just got round to watching. Thanks for posting, really enjoyed it. I loved the terrified wimper's, screams and swearing while topping out is more one of relief than ego boosting. Don't get enough of that in sport/bouldering vids.