Correct. I don't think it can be done. If you registered it at website.ws you definitely cannot transfer it out (and they charge you $100 if you want to sell it to someone else, even though it stays at their registry)!
That's why I GODADDDY!. In fact if it wasn't for them and their cheap cost I probably never would have bought any .WS BuyDomains has bought a few believe it or not.