I read that the system will return the plane to manual control if the plane exceeds it’s stated capabilites while under computer control. The pilots may not have realized quickly enough that they were in control of the plane.
Not sure what you meant, but even a momentary transition to Alternate Law or Alternate Law caused by upset would never return to Normal Law for the duration of the flight.
In the case of Alternate Law caused by upset (Abnormal Attitude Law), the aircraft still retains stall protection. With landing gear up, only Alternate Law (or Mechanical Backup) will permit a stall.
As for autoflight, neither autopilot or autothrust reengage without positive action my the pilot. Once either is off, the pilot must reengage or they stay off.