when the crew initiated a go around from very low height due to changing winds. The main gear touched down producing +3.6G of vertical acceleration, the aircraft became airborne again,
I would think that the sequence of events is more likely the other way around. The main gear touched down, the aircraft got airborne from the subsequent bounce, then the go around was intitiated. I would imagine that the
decision to go around was initiated before the touchdown but that the thrust levers did not get to TOGA until after. I don't doubt however the crew's recollection of the sequence of events as it all happens very quickly.