We've been drilling an escape from the triangle with the handfight: two on one, then pull their arm over the head like baseball bat control (Like twister baseball bat), then you kick out and under their triangle foot, use your leg to bring their foot up to your outside hand, then basically try to shove their foot in their own mouth.
It opens them up and allows you to take side control if you control the foot by gripping the toes and keep it tight the whole way through.
I will try to remember to bring my camera to class wed and see if Stew will let me film him doing it. It works really nicely, I have been using it live rolling any time I get caught now.