This incident prompted China airlines to require 12 hours of unusual attitude/aerobatic training for all their AbInitio trainees. Some didn't enjoy those hours but, at completion, they all knew how to avoid AND, if need be recover from, every possible kind of stall and spin. (In aerobatic aircraft...) Gulf Airline's Ab Initios, also trained at the University of North Dakota's "Specturm" program, followed the same syllabus.
http://www.rvs.uni-bielefeld.de/publ...r/AAR8603.html