Observe the similarity of these movements.
I learned this movement as Aikido drill no from Tristan Sutrisno in 1980, Having practiced and taught is ever since.
Here are some of my students performing the technique.
Marc and Young
Devin and Young
It uses a light backhand strike to the neck to sensitibe the person being moved and then pressing forward against the same point on the opposite side of their neck to make their rotation easier.