Fair enough but:
The pilot in command later reported that the PFD indications appeared normal when descending through FL200. He then reportedly selected the LEFT autopilot ‘ON’, but the aircraft banked to the right and the nose pitched down, so the autopilot was disengaged. A similar result occurred when the RIGHT autopilot was selected, so the pilot in command left the autopilot disengaged and manually flew the aircraft. The pilot in command reported that, with the autopilot disengaged, there were no further control difficulties experienced.
Not fair enough at all actually. At the back of the report it says:
9M-MRG pitches nose-up to +17.6º and climbs through 38,590 ft
at a vertical speed increasing to 10,560 fpm. A/P overspeed and stall protection activate together and the AFDS pitch mode goes to FAIL resulting in A/T changing to speed mode. The A/P disengages and the thrust levers retard slightly before returning to original 65º position. A/P disconnect is again pressed and thrust levers retarded to 45º. All accelerations maintain their excessive values. Airspeed reduces through 241 kts.
So Wiki was right.