That's all right, pbrown. In these times, it is okay to wear the tinfoil (which is why I am dong so :) As FReeper Uncle Ike noted earlier, the burden of proof that Islam is not involved lies with the "there's nothing to see here" crowd.
They can't prove it wasn't an islamist connection, so they are sowing doubt. BY that, they are bringing into question the suicide bombers sanity.