I'm getting at roll rate. Rapid, No?
Lyman, for an aircraft the size of the A330, the initial roll and its successors was very rapid. The amount of aileron applied ensured continuation of a rapid roll rate.
There is no reason to suspect any malfunction of the airframe structure, control surfaces, or hydraulic systems in the observed behavior.
Nonetheless, and it is asking for an opinion only, rolling that quickly felt like ROLL NORMALLAW? How could he have missed it? The PNF was exasperated enough to say: "Watch your Lateral......" to which PF made no response?
Rolling that quickly did not feel like Normal Law, that is why PF had difficulty in moderating his inputs. He had apparently never flown the aircraft in that environment. His initial control input might have been acceptable for Normal Law, but for Alt 2, it was way too large. Once he set the aircraft to flopping its wings, he didn't know how to stop it. What he did was accelerate (but not moderate) his inputs to try to get ahead of the oscillation. What resulted was a decreasing amplitude oscillation that flipped phases on him at least twice. I posted a chart of the roll oscillation back in December. During the data analysis, it became visible that the interval between half-roll oscillations was decreasing from the initial period.
http://www.pprune.org/6908719-post682.html