Norbert Jacquet always questioned Airbus FBW computers. The first time, in 1988, after the Habsheim crash:
http://jacno.com/an00.htm (extracts: “An abnormal limitation by the computer of the pilot’s action on the flight controls etc.” ... “an order of the computers to land” etc.
Difference between Airbus and Boeing controls? Norbert Jacquet is jailed to silence him!:
http://www.pprune.org/forums/showthread.php?t=272603