Mighty kind of ya!
The cable sits loose, and yes the pin is bottomed out in the assembly. I agree the window frame assembly isn't twisting up enough to let the pin out... but I'm wondering if the actual impacts of tumbling allow the pin to cycle? A stiffer return spring would solve that, I suppose... and/or a slightly longer pin.
I hadn't though of flopping appendages being the culprit, but it does sound plausible. Wouldn't be hard at all to just remove that wire and honestly, operation isn't that much tougher without it.
-TJ