what is this and how do i do it

how do i do the behind the back thing samad does at 1:00-1:14

http://www.youtube.com/watch?v=eSEAW7tfxEQ

well thw 1st behind the back catch was the same thing as in Leg wrap trap. remember all these take a lot of practice. all the other catches were just him twirling around while catching the yoyo in a type of under mount/braintwister mount. try and slow down the video to see if you can find out what exactly he was doing or just PM samad and ask for a tutorial since he was the one doing the trick.

well just pop you hand and cross arms and land it in trapeze pop out and uncross arms and land in trapezze then leg rap trap