Suitcaseman,
In reply to your earlier question. If available thrust reduces, the 777 autopilot will fly the ILS glideslope until the speed reduces to just above the stall. It will then ignore the glideslope, lower the nose and descend just above stall speed. If the 038 had hit the ground in this configuration everyone would not have walked away. That statement is based on having seen it a few times in the simulator. Full up elevator, (unheard of in a 777 landing) had been applied at the appropriate time just before impact to cushion it so that many of the occupants thought on touchdown that it was just a hard landing.
The speed protection logic is the same as if you have an engine failure at high altitude in the B777 but maintain alt hold. The speed comes back to just above the stall and then the aircraft descends at that speed and ignores the engine out target speed.