My first question, is why were these deleted? Yes these forum topics may have leaked information about bad design flaws, i.e. Imperial's being able to get past the exhaustion zones; but really, this caused great open pvp that many people enjoyed!
Simply because you can't discuss in the public forums about any flaw in the game that could lead to an exploit (as in that thread, as you just admitted) and you can't discuss about forums moderations (as you are doing now asking why are they deleted).
Your only option is to send an email to email@example.com
asking what you need to know.