@ Studi,
Alternate law plus fixed thrustlever detents would most probably have saved them. If you don't see that you have most probably never flown Airbus or you just deny to accept how it works.
Have you read OEB 38 "Erroneous Radio Altimeter Height Indication"?
"During an ILS (or MLS, GLS) approach with AP engaged, if an erroneous and very low RA height indication occurs, THR IDLE and FLARE modes may engage early with the following consequences:
In CONF FULL, the High Angle of Attack protection is not available. As a consequence the autopilot will not automatically disconnect at α prot +1 °. If the flight crew does not immediately react, the angle-of-attack will increase and may reach the stall value."
If you think a computer controlled stab trim will save your life - then you are going to be bitterly disappointed.