Lauren is prepping Derek for his deposition, and tells him that the opposition doesn't have a case, and Gary Clark is just grieving. She then preps him to not call Mrs. Clark by name and to just use "the patient" instead of names or pronouns. Basically, he's to be cold and impersonal and the opposite of everything Bailey is trying to teach the others that day, as that will keep the testimony less emotional. He then asks why Gary is there and adds that he doesn't need to hear what's coming, and Lauren mistakes this for Derek being worried that it will throw him off his game. But Derek is of course Mr. Upstanding and instead is worried that hearing the testimony is going to bother the man, despite it being his right to be there as the plaintiff. There's no time to discuss, though, as he gets a page and excuses himself.
The other docs have gathered their info and are waiting for Derek to come down so that they can present. As they are waiting Teddy tries to break through Owen's attitude and she genuinely thanks him because she got her contract and Cristina told her that Owen put in a good word. He's not very good at looking unsurprised at things but she doesn't notice, and happily walks away. Of course, as soon as she leaves, she gives Meredith a straight line of sight, and the younger doc just stares at him. He realizes this and asks her what, but she just chirps a pointed, "Nothing," as she maliciously clicks her pen and puts it in her pocket before walking off. Finally, FINALLY, someone actually realizes that this behavior isn't nothing -- Owen certainly gets that she seems to know that he never actually put in that good word and in fact tried the opposite.
Once in their meeting they bring up all the x-rays and put them together like a puzzle so that they can see Bobby's whole frame. Mark tells Derek that he has a really deep tissue infection and that he and Hunt have to get in and take out the infected fat, but Derek points out in his super know-it-all voice that that much fat loss is dangerous. Hunt points out that it's better than dying of an infection but admits that it's risky, and Mark adds that Richard and Bailey will be on hand to scrub in if they need to. When Derek asks about the risk, Bailey admits it's basically too high to calculate -- all of the docs have a different list of the horrifying things that could go wrong, most of which end in death. Derek just shakes his head, declares that the risk is too high and tells them no to any treatment. Richard is stunned and asks if he's saying they should send him away to die, but Derek has the answer to send him to a bariatric center more prepared to care for a patient like this. I hate to remotely encourage any of his famous smartypants attitude, but it's not the worst idea I ever heard. However, he then destroys the good in what he said by adding that he doesn't want to spend their time treating someone who obviously doesn't care for himself, and then he marches out in a cloud of self-righteousness, leaving the other docs stunned and wondering what just happened.