For admin on this forum to threaten users is a mistake and I hope an apology is forthcoming.
No, admin did not threaten. Therefore no apology necessary. That was WU that said they would report bad behavior. But WU was not out of line for saying what they did. That was not a threat. When someone says that they are going to call the police if you come back around with your bad antics is not a threat. That is a justifiable warning. A threat is when you are the instigator of bad behavior and are the one claiming to do harm if you don't get your evil way. I can see how either could be twisted to seem like a justifiable warning. But the difference is a threat is the intent to do harm maliciously without regard for laws or rules.
The forum rules are clear. You can express your views and disagreement without getting nasty and uncivil. Ultimately it is up to the admin to decide what is what isn't acceptable and where to draw the line. There is no quorum necessary. This is a private venue and the admin is the ultimate judge, jury and executioner. Don't like it? Then build your own website forum and make up your own rules.
EDIT: So while I was posting this I see you now took out that line I quoted. I guess you realized it was not fitting. But that line was left there for several hours before I posted. I can also see how WSWeather's post could be misunderstood and seen as though they are talking about the admin, but they aren't. It is just the order of the statement versus the quote that makes it at first seem that way. Regardless I'm going to let this post of mine stay because I might help others. This post also has merit for general forum management and it is also a response to the situation regarding WU's justifiable statement.