Bearfoil
Steady on.
The term superstall is used in connection with a very specific situation where when a wing stalls the tail is unable to provide the nose down force needed to recover from the wing stall.
Please do not start associating the term with all sorts of other high alpha flight. Just because some aircraft can be taken to extreme alphas under perfect control (even up to and beyond 90 deg) that does not mean they are superstalled (indeed quite the reverse).
Re your good Colonel, I never had the pleasure of meeting him but I am familiar with his work.