So... I really dont know how to explain the trick, like... step by step and all those stuff, put the video is pretty clear and it's not hard to do it !
Its basically a gyroscopic, not flop, but.... a strange gyroscopic...
Well, I know I didnt help you "in how to do" this trick but I did my best =]
YYN - Teno
ABI - Teno
YouTube - MIXGodzila