I am more familiar with the Aircraft bending in the middle and twisting enough to cause large ripples in the Skin when lifting heavy loads on a single hook.
I have seen the Chinook put through her paces in far more dramatic maneuvers than the RAF display which at least tried for "smoothness and grace" as the display was planned and thought out ahead of time.
Our displays were unplanned and spontaneous when it became necessary to avoid riling the locals anymore than they seemed to be due to our presence.
For instance, I am quite sure the RAF Display never pulled up on the Lever until it drooped the Rotor system past he pointl the AC Generators dropped off line.
