Hello.
Feels like a long time science I have posted here, probably is..... I check the forum every day and the amount of internal conflict is starting to annoy me, yes the site might go days without any new posts in the general discussion areas, but that don't then mean that it must be filled with several posts in different area about people having conflict with others.
I would say the best course of action is to create a set of rules, something along the lines of bellow.
If any mod decides that a thread is confrontational or if it turns confrontational and is aimed at a cirtian member(s) then it will be removed and the poster will be contacted and asked what it is about, a post will be made in the admin area telling the other admins the name of the person along with a copy of the offending thread for reference.
If the problem persists then the thread should be removed and a official warning should be issued, using the forum's warning system (built into phpbb forums) and the thread about the user in the admin section will be updated.
At this point if the user posts 1 more offensive post according to the moderators or admin then they will be banned (or referred to be banned if the moderators don't have that power).
This will outline clearly what happens and the warning system, while allowing all of the moderators and admins to know the same information where it is relevant. This also clearly shows that it is up to the moderators or admins digression and dose depend on who reads it. In general if the forum members see it as confrontational then it will escalate until a moderator or admin notices it.
This may seam a bit harsh to people, but when you consider the amount of members on this forum, and that it is easy to join (not needed to be invited or approved in person) then something needs to be done to ensure that it is a nice enviorment for people to stay in.
p.s.
According to the barn dance I went to last month (yes..... I really did >.<) then it is a do-si-do and not a back-to-back, the band called do-si-do and everyone knew what they meant (some even came from abroad but the band was local).