The Grim Reaper
Apollo 85
Life dosn't seem to be treating you very fairly.
Just the same in none of your examples did the student enter a spin by first pointing the nose vertically upwards, deliberately become inverted and then enter a spin from a boot full of rudder, which was my only point.
I daresay from your experiences so far that you have reverted to the standard practice of briefing beforehand on the content of the flight, rather than leaving it wholly to chance.
Thou reaps that which thy does sow!