That's true, you're not getting into a stadium with a backpack unchecked. Sounds like said bomber was waiting for the crowd to clear out of the stadium, and the "package" went off prematurely. You don't need two pipe bombs to commit suicide. I'm afraid most suicidal young people aren't that imaginative.
News just said that Boren had ordered a bomb sweep of the stadium earlier today ( before the game)??? I wonder if they had heard something?? That's kinda wierd.