+1 on that. Dealer will hit you with a small bill. You could likely get a locksmith to the car as well. It wouldn't be a very good car if you could remove the ignition barrel without a key, eh?
I suppose you could crack the case off the steering column, then punch out the steering lock pin from behind. After that, just pull the plastic ignition switch off the back of the barrel. It'll twist freely with no key at all.