Teacher -- "So, Johnny, what do you want to do when you grow up?"
Johnny -- "I want to be a hypocrite. I want to be someone on the outside who I am not on the inside."
If Church is supposed to promote morality, then how can its preacher preach what he isn't at the moment believing.
You do not need to be a Christian to teach math in a Christian school. But for jobs relating to Christian theology and administering the protocols of faith you must have faith. If they do not have faith than you are deceiving those who depend on them to nurture their faith. Other than that Atheist should get the same employment protections Christians get everywhere else.
If you want to work for something/someone, specifically, a religious institution, you would need some sort of will, faith, passion or hope in order to productively work there. You cannot simply work at some place, and have no will in working there in the first place, without having little or no good outcome from it. Unless,, you were forced/wanted to do so, (Without faith, of course) for which in that case, you would be taken out of said religious institution, like this Pastor was.
To preach something a person does not need to believe in it. We would not have lawyers if they had to believe in every case that they help to work on. The first thing that you learn in any debate class is how to prepare to argue for both sides. A religious job is still that, a job. People are going to be just as willing to pretend to believe in a god for a job at a church or religious school then a lawyer would pretend to believe that his clients job is just.