Sorry unless there was multiple inflight failures of redundant computers which basically never fail then a flight control induced overg is not possible on the 330.
With loadfactor controlled automatically to +2.5 through to -1G in the clean config it will only be a CAT encounter which can generate such large and massive loads that will throw people around the cabin.
Great job by the crew and excellent decision on diversion destination by the tech crew.
Just glad i wasnt steering that one today...