The real danger in these type of 'lost auto-throttle' approaches, seems to be that the auto-pilot carries on happily trimming nose-up below Vref, whilst simultaneously there is no 'SPEED! SPEED!' Annuncaition (@|@)
Training in loss-of-authority at full fwd stick >===> Re-trim nose down seems NOT to be effective, if it is being taught at all in low-thrust-line a/c type training.
Seems to be a bit of an afterthought, or sideline call-out in Boeings manuals too..
WHY?