Honestly, I don't know what is up with the people you have moderating your forums but they are way too trigger happy and ready to ban people according to any number of vague things mentioned on your forum guidelines according to their own definitions.
I myself have been banned a few times for simply responding to someone who was flaming me. Are we supposed to be nice and tell people to have a nice day in these instances or what? Do you actually expect that? When someone responds to my post and says something blatantly inflammatory like "Oh gee looks like someone's super butthurt blahblahblah" you honestly expect people to respond with "Well that's your opinion and you're welcome to it but, I respectfully disagree." You really expect something like that?
Honestly, the idea of banning someone who simply responded to a post that certainly wasn't "gee have a nice day" but certainly was sticking up for their self in a clearly non-inflammatory way is ridiculous.
I can understand there may be cultural barriers or something that might not be within a particular moderators understanding, but seriously, explain to me in clear plain english how this is an acceptable policy on your site to ban someone who responds to a post that is blatantly flaming him by simply sticking up for their self.