FCOM
In the case of an extraordinary unpredictable external event (e.g. mid-air collision) the flight parameters may go far beyond the limits of the protected envelope. In this case, specific control laws are activated to ensure aircraft recovery, and to allow a safe continuation of the flight.
Note: Abnormal attitudes cannot be reached as a consequence of recorded atmospheric disturbance.
When the aircraft is involved in manoeuvres well beyond even the test pilot's flight regime injuries to aircraft more than the passengers should take precedence. There is no guarantee that the structure is intact and won't fall apart. The flight should be landed at nearest suitable airport and undergo thourough inspection. When even a hard landing beyond a limit requires inspection how can this be treated so casually. It is a very serious event. In A320 In alternate law the AP is available only for two failures i.e. all spoilers fail or all SECs fail. So it's not going to be available.