Argh. I'm so sorry that's happening to you, Arctic. X_X Doesn't sound like a good situation at all, but I hope the problem solves. If not, then we all know the truth nonetheless, that those things aren't true. Even if you are "a nasty person", you've still been nice and helpful to people which is why you've earned the title of MotS, no doubt. I don't really think you are a nasty person, though. I've bumped into in-game before myself, and you don't seem like that. And you have not failed anyone, in fact, quite the opposite.
More likely this "friend" of yours has failed you there. They've failed to communicate and instead, decided to make you look bad without asking for confirmation or anything.
Yeah, though. Taking a break/keeping low is probably best, to clear things up and stuff. I respect your decision, and hope this drama poofs away soon for you. 8c //petting//