Breaking down that video... isn't easy!
So, what I'm seeing is a buildup of momentum through the longer walking steps, into a "pencil spin" with open legs (when she's facing directly forward into the pole, like a pull up, with spinning and open legs). One hand high, one lower.
And then, she turns and goes into a back hook spin, which would be the first thing to practice. This is partly facilitated by her hand placement, as well.
THEN it gets tricky- her knee stays in place, but she brings it up into her chest, and points her outside foot up toward the walls around her, rather than the floor.
Bringing hands down (by going top hand down so that it is just under her hooked knee, and then next hand), which allows that straight leg to begin pointing more upward. From here, it's a quick re-adjustment of body and opening of legs, into a chopper.
And then the ground.
Hopefully that helps, Newschik :)