Sorry, i'm hoping to try tomorrow, but i can assure you that doing what Coach is suggesting won't be at all easy for me, so i need to work out the movement before i think about filming anything.
Actually what the girl does in the video posted is also good stuff, but not nearly as demanding as what Coach describes.A TRX or Jungle Gym is better in this case as it has a place for the foot to sit.
I have my rings hanging from eyebolts in the middle of the room. If you are in a door way i think you would have to bring the straps together and move out of the doorway.