The point I made as to the CVR was not what was or was not on it but the fact that the NTSB claimed Capt. Gibson erased it after landing. This was impossible: the gear collapsed when they tried to tow it. Gibson himself believes the problem was caused by the rudder, and the slat failed later. His petition to the NTSB (which was unsuccessful) can be found at
http://www.iprr.org/COMPS/pet727/PFR2.htm
I stand by my assertion that pulling CB's without telling the F/E goes against any principles of airmanship, and Gibson was, before the incident, a well-respected pilot.
As to how realistic the sim is: Deploying No7 leading edge slat with autopilot engaged at FL410 and then failing the autopilot caused it to roll inverted, and reach M1.2 vertically within a very short space of time: remarkably similar to the Gibson incident. Except the crew could not recover it.