Totally agree a case of speed brake deployment on spoilers 2/3/4 so i'll throw a scenario out there...
"Positive Climb", "Gear Up" > Over enthusiastic disarming of the ground spoilers leading to knocking out to about 1/4 deployed unintentionally?
I'm not saying its Airbus SOP but could be a company thing.
Looks like they returned to normal during the clean up so probably saw the memo after the take off inhibit phase.