I hope that Justin Chambers, the actor who plays Karev, is fine, because this episode is like one which is done usually when an actor dies suddenly and the writers don't know how to explain the character disappearance. I think he has done something to upset Shonda or some other boss, so they kicked him out like this - a lot of flash-backs, and a coward's exit, like a dishonorable discharge in the army. I'm not saying is not realistic for a man to leave his wife, but the Alex we knew was better than that. He would be a man who would come and look his wife in the eyes, to tell her that he's leaving. A coward, he was not....