Everyone is on pins and needles—as are we—to see who's going to survive the cuts the merger demands. The paranoia leads to some strange behavior, like Cristina volunteering for peds (since she thinks it'll keep her job safe) when we all know she can't stand children! Arizona is taken in, at first, but Callie tips her off that Cristina is merely sucking up. Given Cristina's obvious reluctance to play hide and seek with her underage patients, we thought Arizona would realize sooner she was being used.
Callie, meanwhile, is applying for a job in Portland and Arizona doesn't protest, because she's not sure she "has the right to." But then Callie calls her her girlfriend and Arizona demands she stay put! And that she go "grovel" to the Chief and demand her old job at Seattle Grace back. "You don't want to mess with me!" she tells Callie, who appears to cave. No mean feat on Arizona's part, as we remember the shouting match Callie had with the Chief before she walked out!