Either he wasn't supposed to crack the throttle like he did right before he got to the ramp or someone didn't calculate the C.O.G. of the vehicle correctly.
Regardless, that was a nasty wreck and glad he wasn't severely hurt
That was really classy shoving the camera in the woman's face who thought she just watched her husband die. That dude was smart for pulling his arms close to him and crossing his legs like that though. That's got to be a hell of a lot of G force.