1/ the A330 went into Alternate Law, hence it trimmed nose up trying to satisfy the Pilot nose up input. That didn't help recovery. Yes no Low speed protections available however a Stall warning given.
2/ the crew didn't need to check their i Pad or Garmin GPS!! They could look at the GS readout on their Nav display or indeed check the GPS Monitor page for all they needed regarding GS and GPS ALT.
All Inertial displays and Engine displays remained correct throughout.
A very scary episode.