After looking at the longer passenger footage, it looks to me like it’s the old ‘roll inconsistency in config full’ with “wind peturbation” (or whatever similar quaint phrase Airbus used to use) rearing its ugly head again.
I say this because the flaps appear set in the FULL position at the start of the footage. Immediately the roll oscillations stop, you can see that the flaps are in a lower config. Shortly after, the chime of gear retraction can be heard.
So I’m guessing that they got a windshear (coincident with the first jolt in the video), then commenced the windshear escape, all the while maintaining the current config.
Once out of the shear and on the “go around, flaps” actions, the FCCs resumed their normal behavior.
Just my two cents worth.