The first time I looked at it, I thought it was fake. That wiggle at the landing though, was when he put the camera on the tripod, and then took off running to him.
What I would say is, thats as real as it gets folks, It was a clean break because one of the wing bolts that hold on the plane probably loosend up, and fell off. I see that happen all the time, especially in the models.
I've also seen the same thing done in the model, some guy ripped his wing off the same way, and nife edged it all the way to the ground.
Realy, I think it was, "OMG! I'm not dieing in this plane!" and his adrenile was pumping so hard, that it could kill a horse.
"Thats as real as it get folks!"