Thanks for the ping.
As I brought out on another thread (post #91), Rosenberg has apparently been fishing for somebody to hang this on within the defense establishment.
Rosenberg claimed early on to know who did it (or have strong evidence as to who did it), but this seems not to be true. Her earliest reports do not seem to point to Hatfill at all, but to one or possibly two other scientists.
My guess is that she decided that it had to be somebody in the U.S. biodefense community committing an act of domestic terrorism in order to draw attention to the threat of bioattack. (Why does she believe this scenario? Because she finds the motivation credible personally.) She then started dropping hints as to potential candidates, waiting to see which accusations stuck. Her idea may have been that, stipulating her basic scenario, this method of releasing public clues would reveal the identity of the perpetrator; I think that she did not know a name at the beginning of this.
I also still do not believe that there is any evidence for Rosenberg's scenario. If an insider is involved, it is as a mole acting in conjunction with (or as a seller to) the 9/11 terrorists.
The coincidences connecting Hatfill to the anthrax mailings appear to be pretty flimsy -- much flimsier than the anthrax connections of the 9/11 terrorists. And he consented to the FBI search himself.
Note that for any kind of military attack on our country, you could almost certainly find, after the fact, somebody in the defense establishment who has studied that kind of attack. So the fact that somebody can be found who has studied anthrax mail attacks is no surprise, and is probably of no significance. (Every time the stock market goes up or down, you can find somebody who has predicted that move -- by random chance, just because so many predictions are made. That person then becomes a media star for a while, until it becomes clear that the original appearance of success was a statistical anomaly. It's probably the same story here.)