I flipped thorugh IC 6 today in the store. Batman's sequence of deduction didn't make much sense to me, but the sheer gall in wiping his memory was incredible - not just the characters, but DC's editors in allowing this. I guess with what has happened in War Games, it makes sense that Batman is going to be totally alone, isolated even from his peers in the JLA.
My guess is that we get to see the Atom on the run next issue, and possibly the full potential of what someone who can shrink can do. Will the Atom pop in someone's head, and expand to full size? I can't see Jean Loring being responsible - she doesn't have the same motive.