I may have got hold of the wrong end of the stick here but it is just a giro...... it measures change in attitude! It would be relativly simple to "rig" the autopilot to cut the pilot out of the loop. What is the difference between landing a plane on a foggy airstrip and the WTC?
It sounded to me like the accusation was that 9/11 could have been prevented but wasn't!
You got to love those conspiracy theories!
You are only paranoid if they arn't out to get you!