hi i am looking for almost the same vid, but the one i mean is simpler.
get right wrist with left hand, get right shoulder with right arm, fall down to your back with right leg between his legs....
I really like the arm drag, but I don't like how he just kinda grabbed the tricep. If you get the wrist don't just go from it to the tricep. "Throw" the wrist through (bringing your opponent off balance), step in and grab the tricep all in one fluid motion. It's a better technique.
Instead of the classic wrestling takedown shown (which is my instinct), you are in prime position to take the back and end the fight.