AN INSTRUCTOR PLT OVERSTRESSED AN SMA WHILE DEMONSTRATING UNUSUAL ATTITUDE RECOVERY.

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ON A TRAINING FLT FOR AN INST CANDIDATE; I WAS DEMONSTRATING UNUSUAL ATTITUDES AND RECOVERY FROM SUCH ATTITUDES. DURING RECOVERY FROM A SPIRAL DIVE; VNE WAS EXCEEDED FOR APPROX 3-5 SECONDS. FURTHER TRAINING WAS TERMINATED AND WE RETURNED TO THE ARPT. UPON EXAMINATION OF THE WINGS THE NEXT DAY (IT HAD BEEN DARK UPON OUR RETURN); THERE HAD BEEN SOME SLIGHT BUCKLING OF THE AFT PORTION OF THE L WING WHERE IT JOINS THE FUSELAGE. ESTIMATES ON THE REPAIR ARE CURRENTLY BEING DONE. IN RETROSPECT; I BELIEVE VNE WAS EXCEEDED BECAUSE OF DELAY IN INITIATING A POSITIVE RECOVERY. WHILE ENTRY TO THE MANEUVER WAS NORMAL; AIRSPD INCREASED FASTER THAN USUAL FOR THIS TYPE OF MANEUVER; BUT NORMAL SPD RECOVERY WAS WHAT WAS USED TO RECOVER. WHILE I HAVE FLOWN THIS TYPE OF ACFT BEFORE; I DO NOT BELIEVE I HAVE DEMONSTRATED UNUSUAL ATTITUDES IN THIS ACFT PRIOR TO THIS OCCURRENCE. AIRSPD BUILD-UP OCCURRED MUCH MORE RAPIDLY THAN I WAS ACCUSTOMED TO AND MY DISBELIEF AT THE AIRSPD INDICATION SLOWED MY REACTION TO THE EVENT.