SS, I suggest you go away and think about it. I'm not disputing the
imho the engines were deliberately shutdown to prevent further fatalities.
bit, but the rest (engines at idle, responding to decaying Nr) does not bear scrutiny. I don't need to read a book - I've done a bit of it for real, thanks for asking....
Edited to add:
The N2s wound down to 60% and the Nr decayed until it reached the N2 needles ... Guess what! .... The rotors re-engaged and we sat there realising
Of course the needles re-joined, but that's not the same as being governed. Without engines the Nr will tend to zero, over time, but with residual N2 from idling engines the Nr will stop decaying. I hope you know this and are just chucking grenades! (the alternative is dismaying...)