I've only been lurking, but I find Justinian2's latest reversion to veiled (and not-so-veiled) insults coupled with the fallacious question of credentials very typical of what I have learned of Scientologist tactics and typical of my (admittedly limited) experience with Scientologist's themselves.
He loses on the facts and so goes on the offensive. It doesn't matter how much it is pointed out that his arguments are vacuous, flawed, or non-existent; it doesn't matter that the flaws he claims are within the arguments/positions of his opponents are actually flaws within his own position; it doesn't matter that truth is absent from his side. All that matters is that he win by redirecting attention. He will continue to do so as calmly as the argument allows, but will, if necessary, become vitriolic about it. Both he and Scientology (Free Zone or not) have no shame.
Scientology: The McCarthyism of cons.