Just to clarify and remove all conspiracy theories. A post violated the rules. The lady in question flagged the post, as per normal, for the mods to deal with. She went farther however, and PM'ed the OP and tore a strip off of him. He alluded to that PM, but did NOT name her, in thread, nor did he post it, quote it or break any rules around that. The lady then lost her temper, posted something very nasty and personal and true or not, it's a major violation of the rules. She also chose to make some comments directed at the moderators. She's been banned for a week for doing so. Some of her comments have been edited to remove the parts that break the rules. Whether or not she stays after the ban is served is entirely up to her, but the ban itself was duly deserved and Jess agreed with it.
If you want to question anyone's motives, PM a mod, or ask her yourself when she returns. There's no need to further publicly speculate. I'd also recommend to everyone not to jump to conclusions, before you know what actually happened. It avoids embarrassment when your assumptions turn out to be incorrect.