Supersonic skydive from 120,000 feet

[bananas]

10. You misunderstand - the drogue chute won't be used at all

unless he goes into a dangerous spin.

The drogue chute isn't needed to slow him down to subsonic velocity,
atmospheric drag will do that.

The purpose of the drogue chute is not to slow him down,
but to reduce his spin if it is too high,
which could cause him to black out or die,
because the centrifugal force would push his blood away from his heart and lungs,
it would pool in his limbs and not be refreshed with oxygen.

He shouldn't spin that fast, but in case it happens, the drogue chute will open automatically,
to reduce his spin rate.