How to roll with the armbar to get the tap (counter to being stacked)

I'm working on a blog for class and it's bjj/mma/liverpool inspired. This video will show how to get the armbar when you're stacked by rolling the hips. Give it look see and let me know what you guys think. As always, thank you

http://davidtor.wordpress.com/2013/04/13/rolling-with-the-armbar-to-get-the-tap/