When confronted with difficult situations especially those involving Flight Control Malfunctions or any situation not trained for or even discussed during training.....the key to survival is never giving up and "flying" the aircraft using whatever resources you have available.
One such example....a Chinook decides upon its own to yaw left then roll inverted...and refusing to allow the Pilots to move the flight controls to combat the actions of the aircraft in a "normal" manner.
It and the crew survived.
The Crew's Accounts of the event......
http://www.chinook-helicopter.com/Fl...x_May_1998.pdf