There are a number of replies here which start with 'I don't want to get into a slanging match but ..' and 'I have never flown Airbus but I don't think its much good'. So what follows in these posts is hardly worth reading. I have got over 3500 hours on the Airbus FBW aircraft and over 2400 hours on the B737. The Airbus has its faults, which are often brought out when an unusual incident happens, but they are all excellent aircraft.
It would appear in this instance that the requested input from both pilots was so extreme that the system would not allow it and retained the existing AOA. I would think that Airbus will now change the software to allow this to be accepted by the computer. After all a request of full back sidestick on both sidesticks should be responded to more rapidly than normal by the system, not thrown out as unacceptable. It's not perfect, but it is still very good.