You always say that when this illusion is involved. It's impossible for either of that to happen in such a tight frame, least of all while Jonathan was gripping both handles.
I suppose.... Jonathan Pendragon just twists his torso. The tight metal frame around his head, is misleading us that he is tightly held up in the prop. There is ample space in his mid-torso for the lady to pass thru. I can clearly see the lady is squeezing thru his left side.
Jonathan was gripping both handles when Charlotte burst through his torso, and the space in that frame was nevertheless so tight, it was impossible for Jonathan to shift his torso and/or Charlotte to squeeze through.