The EULA says "Accept these conditions and if you fail to meet them, we termninate the service". The post says "I refuse these specific conditions (that were probably invalid to begin with) and if you disagree, just terminate my account."
It's like leaving an email in your drafts folder expecting google to read it. Or typing something into Google Search box and expecting that to be legal communication.
More info: https://www.youtube.com/watch?v=xDHDM7PfyYs
The above video makes good points even though it's been posted by college humor (not particularly meant to get your legal advice from)