I would more suspect the terrorists of trying to fly the plane into a target (crash) rather than just crash the plane anywhere by pulling circuit breakers.
Were circuit breakers pulled on the planes that hit the WTC?
The WTC planes didn't have passengers trying to win back the plane as best I can tell. If the cockpit was breached by the passengers, it would not surprise me to learn the terrorists pulled the breakers in an effort to make a rescue impossible.