Illegal foldover. The liberty that folds over must come from prep level. They can bump down and drive back up through the extended position, but they can’t start from the extended position.
The ending skill in this video has the bracer on the right leaning over to an inverted position. She needs to either bend her legs more, and the catchers need to catch higher. The one on the left side in the back needs to maintain their connection and the catchers need to catch the upper body. This was a very scary position to leave the top person in!