No wonder he thought that he should have been fired.
Where does he say he thought he
should be fired?
I understand he thought he was going to be fired.
They are quite different things. Maybe it's too subtle for you.
Not only did he not get fired but rather he was promoted. That's what the owner thought of Brewer's efforts.
I guess the owner was a CIA operative intent on keeping Brewer quiet about his real role on the 22nd?