As much as I've loathed Wotc in the past, I wouldn't expect anything else than getting banned if I pulled a move like that, it's normal they wouldn't want their own website used to injure their sales. Make your own website, then you can rant and rave all you want. If something bothers me enough to rant about it, I will, and I'll take the banishment, thank you. Sometimes you gotta speak your mind. The fact that they banned you at least means they read what you had to say, rather than ignore you. When I played 4e, it always felt like Wotc ignored their own forums and read Enworld much more anyway. It's full of 4vengers there, I can't stand the place. I do post once in a while in the Next feedback, because I want to throw in my 2cp and it's obvious they actually are paying attention to what we say.
That said, the whole DDI fiasco and the OCB / CB Loader thing ...they are essentially killing 4e by shutting those fan sites down, and it's poor form. I'd set up a server in a country with reasonable copyright laws and post my fan-work there. Information wants to be free, and the internet interprets censorship (and lawsuits), as damage and routes around it. I don't like bullies, if I want to make patches to OCB to support custom rules whereas their kludgy online builder doesn't support it (or worse, they shut it down entirely and put 4e to pasture for good), I will. I already paid for the books, I own them. I also already paid for the OCB, and their grubby little paws have no business telling me I have to remove it, since they stopped upgrading it, they forced half the 4e fanbase to go to illegal means to keep using it, and especially once 4e is completely unsupportd OCB will be the only game in town. So I say, screw greedy corporations, you already paid for the tools and support you have, don't let them take it away, but don't expect them to let you use their website as a forum to rail against them. Just make another account if you wish to keep posting there, duh.