Upvote:2
I hope the following does indeed contribute to the answer....
Paul writes that an elder must be above reproach, blameless, the husband of one wife, manage his own family well etc from 1 Timothy 3 and Titus. A divorce is seen as causing serious question marks on these things for the man who has gone through such a tragedy.
Since the qualifications from Paul are not "ought to haves" but "must haves", then it has been the case in many Protestant denominations, that a divorce will disqualify a man from continuing to hold public office in the church.
It in no way condemns the divorced people to not being christians any more, if there is repentance, but it does preclude a man from continuing in the office even if he is the innocent party.
That's how it works in the circles I have seen....
But for those circles that do allow Pastors to re-enter the teaching office, it is generally because of arguments like "Who are we to judge? If a man is innocent then it should not disqualify him. If he has repented then we should bring him back and welcome him as a brother."
Such reasoning though is contra the first set of principles.