The choke has the same principals as a standard triangle. The arm in cuts off one side and the other side of the triangle cuts off the other corotid.
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The angle of the video makes it hard to see, but if you watch this one you can get it. Drew is adding an extra hand on the shin to make it extra tight, but it's basically this:
http://www.youtube.com/watch?v=rFM_AjQ-s9s&sns=em
This is a lot like the triangle I play with when my opponent drives their head too low in side control and I'm able to jam the head.
Thanks for clearing that up. Gold.
Ah man. :-) I've been getting stuck here with some of the bigger guys. Def gonna use this!!
Cade can tap you with nearly no squeeze, but with all angle.. He's also a very badass blackbelt. Lol.