Have I missed something here, or are you honestly saying someone managed to overstress an aeroplane following a TCAS RA?
I seem to recall an MD11 (DC10?) out of Honolulu which made evasive manoeuvres due to traffic which warped the elevators. The aircraft was grounded in Sydney after engineers noticed that the elevator skin was wrinkled and the elevator ends were rubbing against the horizontal stabilizer. Apparently the damage went unnoticed during the transit in Nadi.