I bet Mr. Brown does, you should ask his sources ! It's worth the shot...
Btw I've never seen a full act of rubber band magic like that, it was UNBELIEVABLE !!! All thoses "tricks" getting more and more impossible, that was MAGIC !!!
I just played with it a little bit. It seems to be a lot like the trick Pixel. Same idea. Play with it and you'll get it. He's very smooth. Awesome video.
Everything up to the final add-on seems to be from the original manuscript on Crazy Man's Handcuffs (the rubberband trick). I've always felt, however, the patter as "look it's a pair of fingercuffs" was not quite right... Technique in the video was excellent though.