I think the subject of 1Tim 3:1 is instruction that if one desires to be a pastor he should “desire” a good, beautiful, virtuous, work or labor.
(1Ti 3:2) A bishop then (or but now then, likewise then) must (necessary as binding, needs, ought should) be blameless (unrebukeable, inculpable), the husband of one wife, vigilant, sober, of good behavior, given to hospitality, apt to teach;
To me the scripture is instructing that a man that desires to be a pastor should desire a good work and after the decision he now then should be blameless, unrebukeable, and not guilty of the following things.
The key words I see are “desire”, “but then”, “should” which is different from absolutely has to be now and always.
Then comes blameless, unrebukeable, inculpable or not guilty, which I would think if the pastor repents on his own merit he would be blameless or unrebukeable and as for inculpable or not guilty the qualifying word translated “must” in the KJV when taken back in the Strong’s Concordance doesn’t define as absolute.
Frankly if a pastor had to be 100% not guilty of all the definitions of bad behavior, not being patient, never brawling or quarreling, never being inhospitable and never having his children be insubordinate and the rest of the things on the list I would be inclined to say there wouldn’t be any pastors at all.
Personally I don’t expect a pastor to be perfect nor would I be quick to draw the line that he couldn’t cross unless it was blatant immorality or an obvious lack of desire to do good or repent. As for punching out a fiancé under those circumstances I think I would be able to read the distress on the face of that human being and give him a hug.