hehe yeah i saw the part where u got hit in the nuts, discretly edited hehehe
it seems similar to systema, russian fighting, i have video with a systema basic, instructor (Vladimir Vasiliev) focus on very lose, fluid movements, for example if you get hit in the shoulder you counter with other shoulder so the attackers hand breaks sounds strange but this guy meant it would work i dunno i think its whats spestnas is using so guess its good........
btw, what system is that, jkd?