Jackson, Mr. Complaining McGripey, is bitching about his rodent charges to Lexie, who is carefully practicing a procedure on a plum. She replies with all of the correct, supportive girlfriend niceties, and reminds him that this is just until they get FDA approval, but he can see that she's distracted. She explains that her patient's skin has grown directly on to his heart, so she's helping Teddy remove that without accidentally puncturing his ticker. It's a surgery that seems custom-tailored for Cristina.
Teddy knows it, too, so she finds Owen and orders him to give her a list of reasons why she shouldn't let Cristina back on her service so that she can talk herself out of letting her back on this surgery. The one flaw to Teddy's plan is that she's asking Cristina's husband to do this, and I think he's speaking both as husband and co-worker when he tells Teddy he thinks that she should take Cristina back. Teddy rejects the idea immediately and tells him that wouldn't teach Cristina everything. She finally explains her reasoning behind freezing Cristina out and I'll admit I'm a little surprised when it turns out to be a good one: Cristina got lucky that her procedure worked for Callie, but she can't see that, and just thinks she's the most brilliant resident to ever walk the halls of Seattle Grace. Owen thinks Teddy could just tell Cristina this but Teddy knows Cristina well enough that she knows she won't listen -- she has to learn the lesson herself. Teddy tells Owen she can handle being the bad guy, but could Cristina handle something like killing Callie? I think that Teddy is totally right about Cristina but let's be honest and point out that I think it definitely bruised Teddy's ego a little as well. Owen at least now finally understands Teddy's point of view, and the worried look on his face says he agrees.
Alex gives Derek that they are going to need to put a shunt in Zola's brain and he's still there when Meredith walks up, so he hears Derek ask her how things are going with the trial. The first wave of patients is done and so they are moving on to the next group. Once Derek's pertinent exposition is done, he leaves so that Alex can give Meredith more of a hard time. But when he asks her what she did, she plays completely dumb. Alex points out that he saw her with one of the packets from the trial and reminds her that no matter how minor, if she did anything she could invalidate the whole trial in addition to being in legal hot water for screwing around with a blind trial. Mere won't give up on pretending she did nothing, and when Alex is done she presents him with an eloquent reply: she claims she did nothing and he should shut up. As one reader asked, why was this not a double-blind trial? I still am having a hard time swallowing that they'd let the doctors know what medicine was given, rather than keeping them in the dark too so that there's no unconscious difference in the follow-up care the patients receive. But then again, now we have a juicy storyline, so I think I have just answered my own question.