FRQ
I think the biggest mistake was not advancing the power lever when it started going pear shaped. But the power control on the right and not keeping the nose down seemed to be the start of it for sure.
FGD has a point too, knowing Shane and his family, gung ho is not what I would expect at all, maybe he was this day, but if I know the folk (him and his family) as well as anyone I doubt it was significant. More likely he had a belief the very experienced pilot being checked would not make a mess of it. Only a couple of seconds from belief-non belief - rolled on ya back and dead.
Reading how hard they are to control in a sim, the heavy control forces, and when you know what is coming and why you are doing the experiment, that makes for eye opening reading too.
Very sad event.
