Lyman
I think the key here is the people not the instruments. None of them show any real understanding of the situation they're in. As I mentioned perception is a vital factor and it looks like none of them could be described as being in a state where they could perceive correctly. Others have written of the natural impulse to pull back on the stick and this seems to be the PF's reaction. Initially as I have pointed out the PNF was telling the PF to go down without effect. By the time the Captain arrived the PNF had also succumbed to panic and was not coherent.