Ive been playing quite a bit lately with this counter to the double under pass... I inmediately close a no arm triangle, then I wait for him to chill, always looking for an opening to underhook one arm and go for the armcrush, if the person does not get a gable grip right from the start of the pass, I normally am able even to fight one arm, theres nothing stopping me from removing the arm thats infront of my hip, getting it in position and underhoooking the arm, then attack the armcrush or reverse udegarami... I get completely perpendicular, basically is the same position as you end up in a normal ryangle. Today I got one guy who defended the arm crush by grpping the inside of his tight, I was still able to underhook the arm and get in position, he wouldnt let go so I went a little lower on his elbow, he tapped from some sort of omoplata pressure and also, the pressure I was putting on his face/neck was too much he said... he wasnt going to go to sleep, but he felt like his face was going to explode. I guess using the stomp and curl motion really puts a shit ton of pressure on the head of your opponent... does any one else have success with this counter?