have at it..video clip

[YouKnowWho]

I don't see a trap.

IMO, it should be an "arm guiding - to use your right hand to guide your opponent's left punching arm into your left hand" instead. In order to do that, your catching hand has to be on the opposite side of your guiding hand.

http://www.youtube.com/watch?v=SRR6mP-sMno

The more reasonable assumption is if you make a move, your oppponent will also makes a move. If you make 4 moves, your opponent will also make 4 moves. To assume that you make 4 moves and your opponent only makes 1 move is not realistic.

The praying mantis system likes to use this kind of combo but the assumption is, you have to attach an effective "hook" on your opponent. This way, when he retreats, he will pull your body with him. Without that "hook', your opponent's body is already gone when you try to apply your step 2 move.