Why not open a "pinned" thread that can be referred to whenever somone wants to interject a theological, political or philosophical point of view?
Any topic that sways into to one of these areas and a poster has a strong point of view can simply say "I have an opinion/objection "outside of the rules" on this topic, refer to "pinned" thread for my opinion." That way anyone that may or not be offended by his/her opiion has the "option" to chose to read and/or post to it. Simple no?