I know what you mean and agree with you. An obvious high order explosion would generally preclude biowarfare and helping others would be just fine. A low order explosion raises a lot of questions - but this one appears to be incompetence rather than bioweapon dispersal mechanism, fortunately.
Let's see, we've gone through the Al Queida "A" and "B" teams, apparently; this must be the "C" team.
The Tampa Bay Devil Rays of the terrorist world.