BTW: Finished IC #5 the other day and also all of the tie-ins for the most part. This is the best thing DC's done since COIE, IMO. I'm looking forward to the Checkmate and Shadowpact ongoing series spinning off from IC.
Possible Spoiler/Theories on IC:
I'm of the opinion that somehow the "negative space" of the anti-matter universe is really what changed Alexander Luthor and SuperBoy. I think we'll find out that the long term exposure to it is what made them wig out. It's a little too much to believe that all of them would flip simultaneously.