I could have done a better job of showing the setup details. I did this several years ago.The camera was about 6 inches above the end of the meter stick. So the camera is above the shoulder. Here is a side view of the setup.

It appears that this photo is a good illustration of my point about having to keep tension in order to stay in that twisted position. The hand on the lower leg appears to be helping to hold the pose.
By the way, I believe that I might have been discussing this topic with you when you made the photos years ago. I found this photo in an old computer file:

I don't remember which one of us combined the two photos. Back then we could use screen names, so mine was different than it is today.