Aw man, sorry guys. I meant to post earlier but I barely got home. Anyway, good news from workin at TRU.
This deal can be exploited with CoDMW2. MW2 is on sale (today at least, didn't see for how long) for $15 off. If MW2 is your half off game, the register takes the 50% off before the $15. So it's $60 /2 = 30 - 15 = 15.
Some lady got it with AC2 today and MW2 rang up $14.99. That was our last copy of MW2, but if we get more in tomorrow, I'm seeing if I can get 2 copies for $60.
I'll be working most of the day, so if anyone else is going to be out and wants to try and post success/failure stories, I'm sure others would appreciate. Also, I guess it's YMMV if the cashier will even do it, because my manager tried to shoot it down, saying it was one promo or the other. But she didn't have much to say when I already did it for a customer.