I don't believe the Important issue is if I choose to Ban someone or not, but if I am able to treat others as I would like to be treated!
In this case, I Respect others wanting their own opinions and understand that if I was to try to Force my beliefs down other folks throats that I would get banned in their Private forum!
Thus when others try to force their ideas down my throat in this Private forum, they shall be subject to Banning!
This seems to be the easiest problem to solve!
The tough part is getting to this point of choice without causing Confusion and Hurt amongst those involved in the process of communication with these people, up to them becoming banned!!