I disagree...
If they had enough nous to turn the switch off, well, the power was still too low with the speed dropping, an obvious trend that any alert crew should have been well aware of, not least because of those "trend vectors."
Let us assume that these two didn't have a clue what those little magenta thingies on the Flight Displays were trying to tell them, then they were sat there also watching the speed tapes unreel, when speed can be life.
Switch set this way or that, the next thing was the pusher and that was for real, the final line of defense against a stall, when the unfortunate Captain Renslow seems to have had this come as a total surprise to him so that he did completely the wrong thing for reasons we can only make conjectures about. Not to be outdone, his unfortunate FO also did completely the wrong thing, raising the flaps when the aircraft was stalled.
Were these two just having "a day at the office" or what? A phone rings... should I answer it? Who really cares? The stick pusher activates at low altitude... should I react properly to that? Well, I guess that really, really depends on how I feel about having a fatal accident in the next few minutes, doesn't it?
That is to say, take a 16 year-old kid who hasn't even soloed yet, just one with a firm grasp of the pre-solo basics who is enough of a nerd to know all about EFIS, stick-shakers and stick-pushers, put him or her in the left seat of a Q400 sim with low power and the speed dropping so that he or she gets the shaker and then the pusher and let us see what he or she does.
Someone here claimed that 70% of all professional pilots will do the wrong thing and pull into the pusher to put the aircraft into a deep and unrecoverable stall, when I simply refuse to believe that. I bet that approximately 100% of my imaginary 16 year-old will first spot the speed trend (I don't know, should we promise drugs or porn if this is done right?) or at the very least react correctly to the stick-pusher. This is about as complicated as stomping on the brakes when someone steps off the sidewalk in front of you, when many places do allow 16 year-olds to drive!