It is an amazing account. Sadly it is all too common in todays litigious world. I have never had a problem with the flaps on the A320 but I do know of a nasty incident when negative g activated the wing tip brake with the flaps at full. The ECAM said place the flap lever to 3 (it assumed asymmetry) and the crew then had the wrong flight control bias for the existing flap position. That was a computer software problem, but it was swept under the carpet in a similar manner.