Delay Happily Booked?

Well, Tom Delay had not only a warrant out for his arrest, he got booked into jail.
What caught my eye wasn't anything that was written, but the photo on the right (see story: http://abcnews.go.com/Politics/wireStory?id=1234756).
Most people would be in the worst of moods when they get their mugshot. Not Tom Delay.
There's only two reason I can think of on why he his mugshot looks like that. First, he has a short-term memory condition (like the main character in Momento). He just blanked out and thought it was an actual portrait.
The second and more likely is that he doesn't drop his public persona. Let's face it, it would be normal for anyone, guilty or innocent, to just think "ahh s***" when this happens. This just makes Delay look more artificial, as though he was someone else's construct. Or worse, his own.