There are actually a couple of interesting things in this article:
First of all, the ideas that FBI agents are said to be pursuing are completely consistent with foreign terrorism; they even mention that the weaponization would have been done in a "remote location." I'd say that that's correct. (By the way, a lab in Asia would be a "remote location.") The Ft. Detrick connection is merely one possibility for where the terrorists obtained their spore samples.
Secondly, it's of interest that Barbara Hatch Rosenberg is meeting with staffers for Sens. Daschle and Leahy. This bodes ill. What is the purpose of this meeting?