The Airbus was not designed to be hand flown, especially not by the neo tech, zoomy headed, X box raised, non pilots of today. Yes, the Captain may have the savvy to hand fly it but may not know how low the computer system has degraded and when it may override his actions. The F/O may know how low the system has degraded but lacks the basic flying skills to command the aircraft at that level of degradation.
So yes, park it and fix it . Good decision Captain.
Simple reset? CB's? Is that legal? In the manual?