Hmmm - and I thought "settling with power" only happened with rotorcraft.
I seem to see a slight decrease in pitch attitude just before the settling, which suggests to me either a momentary lapse in pilot awareness, or a stick-shaker or stall warning that led the pilot(s) to reduce back-pressure a bit.
Although with Airbus, it could have been a control-law intervention as well. "Don't DO that! (overrotate)." Or, of course, a slight error in Weight/VR/Trim calculation.
Can't see the elevators move significantly, however, at that moment.
In any event, on the plus side, they managed to avoid a tail strike (twice - in one takeoff).