actually i think you have a bad or damaged reversing wheel in your autowind module which is letting the power reserve out through the rotor , rather than being held captive by the mainspring ....
My ZF Ultra Thin Moon did the exact thing after I removed it from the winder after a few weeks! How did you manage to capture a video of it though; I assume you can replicate it? FWIW I stopped using the winder and the watch is still working well.