Leah is talking to the doctors, telling them, "Bob liked his beers." The woman is unfortunately really bad at putting a soft spin on the various horrible aspects of her drunk, wife-beating, road-raging husband. His liver went bad a couple of years earlier, but so far a match had not come up on account of his rare blood type, blah blah blah storyline convenience-cakes. Scott was tested and is a match, but hadn't decided yet if he was going to donate. Cristina rushes in to tell him that family members shouldn't feel obliged to donate, but Leah gets defensive and says that he's been in counseling to help him make the decision, which is standard procedure. But it turns out there's a bit more than him not just deciding -- a date had already been set for surgery, but then came and went with Scott still unsure. She says she doesn't want to pressure him, so Cristina unceremoniously tells her, "Well then, you shouldn't." Leah cries about not wanting to lose her awful husband, and Burke dismisses the team.
In the hallway he demands an explanation from Cristina for her behavior. When she explains Bob's wife-beating ways, Burke explains that those aren't reasons to not use heroic measures to save his life. He tells her to think like a surgeon, and doing that means seeing in black and white that someone needs a liver and someone else has one he can use. When she protests, he argues that the moral issue isn't for them to decide. He declares, "It isn't up to you," and grandly walks away. She mutters, "Well, you made that perfectly clear." He turns around with his eyes blazing (which really sort of worked as an eerie indication of the future, given what we know now about the personalities of certain actors) and icily says, "Well, I'm glad we have an understanding." "I'm sure you are," she shoots back. This is the Cristina I love, and who I hope is coming back in Season 4 -- the one who won't take shit from someone.