I was inspired by [ame=http://www.youtube.com/watch?v=5wfIT6rz8KQ]this video from Submissions101[/ame], and I'm curious if anyone has had any success with submissions that don't come from the dominant positions of BJJ. Aside from the one mentioned above, all I can think of are can openers (which are generally illegal), the triangle as a counter for a cradle from judo, and leg locks being set up from inside the guard or when turtled. I also seem to recall a video that got posted on here a while ago of Shen Yin doing some kind of guillotine from beneath side control. Do you think that these types of submissions have any validity? I know I always get taken a bit by surprise when someone tries to tap me out from inside my guard. Does the "position before submission" attitude lull us into a false sense of security?