As discussed you put ramp into the front AFD. When you add the lift, the AFD contact point changes...being put to the very back of the AFD, in doing that, it puts additional force to the toe wings, which is multiplied in the rearward twisting call. Was that any thought in doing a centrally curved AFD which would eliminate this possible problem and having the toe possibly jam in a rearward fall?
Doesn't every other binding do worse when you lift them? Not only would you move the contact back (or forward, depending on if you lift toe or heel) on the AFD, but they'd also all be "rocketed" when lifted, and at least the straight AFD doesn't do that. I'm not a binding engineer, but this sounds like a very minor problem to me.