Of course things like pirating people's software or publicly posting an exploit is going to result in some sort of ban, if not worse! Has human nature and its long history of overreaction just escaped everyone lately?
It's not great, but it's reality. If the only fix available to you is piracy, pirate and go about your business... if they're ignoring the exploit you've reported, making it public isn't nearly as likely to help anyone as it is to turn you into a whipping boy.
Of course, if you don't mind these consequences, go for it. But I don't see how you could possibly fail to foresee the potential backlash.