There is a arm clamp sort of position that works quite well.
At about 3:15 he calls it a torsion grip. I used to figure four. But you can fight the gooseneck pretty well from there.
That torsion grip will take a guy down on its own it is some clever business.
You know what I find the biggest drawback to posting a video that's over thirty seconds long? I don't think many take the time to actually watch them, never mind study them and eventually try them out.
Such treasure troves of information, presented in a way to make learning easy to people of the arts, and yet...
A head scratcher.