I actually completely *missed* that Cavil killed himself, because it was so abrupt and my eyes were glazing over from the action scenes. And... okay, did dead!Racetrack basically nuke the Colony? So he was pretty much screwed.

...Oh, I just skimmed the Mo Ryan interview and Cavil shooting himself was Dean Stockwell's idea. Tigh was supposed to kill him. I kinda like it in theory, but it didn't play that well for me onscreen.