Looks like the guy is a good rider judging from some of the other pics. But why purposely skid through a burm so you can kick up some roost for the camera?? Just a shitty thing to do to someone's trails.

 Look again at his levers-they aren't pulled. He's just brapping along and is able to slide his bike around-looks kinda neat and considering he works on the trails, I'm sure he'll be putting in the repair time later on too.

 Way to wreck the berm! Not only are you ruining the trail, but skidding through a berm isn't efficient riding either.