Easy for you to say from your armchair. In the Baptist church, a minister works directly as an at-will employee, reporting to the church's elected directors and members.
It's the congregation's facility, not his. Holding the wedding when told not to would have been trespassing.
Maybe this would count as a case where civil disobedience should be used, but if you get the wedding party arrested on their wedding day, that's not going to help matters much. The minister was told he would be fired for standing his ground -- he's the one looking for a new job and moving his family, not you. Instead of taking that risk, he stood his ground in a different way that ultimately got the issue, fixed instead of just swept under the carpet.
The issue was addressed thru the right channels. The wedding went on without any use of handcuffs during the ceremony, and the original church took care of what was likely one or two individuals overstepping their authority. No violence, no breaking the law, and no embarrassment to anyone except the church directors who were in the wrong.
