Shame no one pressed toga, this would have exited the landing mode and applied reduced g/a power.
I guess they may have been distracted by the radalt failure, plus at 2000ft they may have been reading the landing check list, transferring to tower etc.
Someone should have been monitoring the aircraft, and flare and retard would have been unnunciated on the FMAs with a box round them. This should have been noticed. At this point either they should have disconnected A/P and A/T and manually recovered, or as I said, pressed toga and it would have performed an auto go-around (with or without A/P depending on single or dual channel).
The first action on the stall recovery procedure for a 737 is disconnect A/P and A/T and manually apply full thrust.