Yes, this is a very frightening possibility. Let's call it the Jack D. Ripper strategy. (from Dr. Strangelove) Let us remember that Ripper was not just a crazy nut who launched the planes under his command to attack the USSR, but he explicitly gambled that when the high command found out about his impending attack they would launch an all out assault in an attempt to cause enough destruction before the USSR would be able to retaliate.
So, when Congress becomes aware of the bombing or Iran they "will have to" back a full force escalation in order for the US not to completely loose power in the world...
I wonder if Bush is concerned about the purity of essence of his precious bodily fluids.