Simon forgot how to rabbit.

Uh, I don't think that looks right.  I'm no expert, but I guess that he:
1) Lost control of his rear end going as fast as he was.
2) He couldn't decide whether to run or do a binky and attempted to do both simultaneously.
3) He was attempting the world's first bunny cartwheel.
Well, if anything the little guy has mad balancing skills because he didn't face-plant into the purple towel after this derp-tastic display!