Look, we've been over this. I won't trust him with the ship at all. Ever.
What if I took him apart, altered his programming, vented the Q-matrix, and rebuilt him in such a way that was completely unrecognizable as "Ennesby?"
Is this one of those "machine ethics" questions?
Hey, look at that! My desire to pilot your ship just evaporated in a puff of elective surgery.