There was an ILAFFT in Pilot magazine a few years back written by a guy who'd had an asymetric flap deployment on a Bandirante, and couldn't retract them as the whole mechanism jammed up. He managed to land it, somehow, but it sounded pretty scary, as it damn near rolled inverted initially (from what I remember). If I can find the original I may post a synopsis, but it won't be before next week.
Brooklands