As I think about it, the student pilot should be required at a minimum to demonstrate unusual attitude recoveries associated with spins. Meaning the instructor does a gentle wingover ans says "it's yours". If the queezy tummied student can't muster enough reserve capacity to recover an unusual attitude, and fly home, they really do not have what it takes to be a pilot.
I quite agree - and as an instructor it's the way I do things, starting off with very gentle manoeuvres and getting the student simply to recover back to a datum attitude using the primary flight controls, then after a couple of lessons the same exercise but to balanced and trimmed straight and level flight. Even the less confident students improve massively using this method, and gain a lot more confidence in the aircraft and their own handling capabilities.