One wonders if the inclusion of a tail parachute would have been a better option on these slippery open class ships with tricky recovery envelopes?
Accidental or unreliable deployment issues aside, a drag chute could probably be used to recover from a spin or spiral dive without exceeding Vne.

For example the Nimbus 2 has a terminal velocity in a vertical dive of 200 to 220 km/h (108 to 119 knots) with the tail chute deployed, air brakes and landing gear extended. So assuming one popped the chute within a couple of seconds (giving extra time to extend air brakes and lower the landing gear) the glider would be able to exit the spin/spiral vertically and then gently pull out of the dive without breaking anything in the process.

Is this a crazy idea or feasible?