Chris: Back in the late `90s when I used to conduct a lot of sim training on the A330 one thing became very apparent whilst doing "Recovery from Unusual Attitude" training. (NB. sim lack of fidelity may be an issue here)
With a very high nose-up attitude and the THS driven in the nose-up direction - when it came to the recovery the elevators often lacked the authority to pitch the nose down without the THS being manually run forward. It became one of the main training points to take away from that scenario. In other words - full NU THS could override full down elevator inputs. This is before we even get into considering what valid/erroneous flightdeck readings were presented to the crew on their PFDs.