Originally Posted by DOZY
I'm a little fuzzy on what "taking over" constitutes - Alpha Prot should not command significantly opposite the input it is given as that is not the way it is designed to work.
Which part is that confusing for you in the A330 AIRPLANE FLIGHT MANUAL :
At any time, if the aircraft goes to an unmanageable pitch down attitude despite a continuous deflection of the sidestick in the full backward position : APPLY THE EMERGENCY PROCEDURE