When a 10,000 hour Robison instructor is killed by a student doing exactly that manoeuvre (near Bournemouth in the 90s) you have to wonder if the cyclic position played a part.
If that's G-PUDD in 1994, then the instructor had 7,170 hours on helicopters and 5,200 on type flying with a a 4,000 hour FW, 40 hours gyroplane and 22 hours on type ATPL. And we don't know from the report who had hands on, but I'd expect an FI with that many hours on type to be well ahead of the game.