This is where a post-CPL course is aerobatics and gliding would be beneficial to all new candidates, to stretch their horizons and abilities. Experiencing an upset for the first time with pax on board is not the best time to discover you are uncomfortable with the sensation, or don't have an automatic stall identification and response reflex (Air France please note).
Well said, silvertate! Or better still make it part of the CPL course.
In D.P.Davies' classic book written in the 1960s "Handling the Big Jets" the author suggests all line pilots should do 5 hours per year in basic a/c practising recovery from unusual attitudes/positions.
I also agree with your comments about reaction to zero-g.