So, he was going to be fired as the head of Seattle Grace and his brave solution? Saving his own ass by making a merge with Mercy West, which will result in dozens of people fired, plus bringing down the spirit of the whole hospital.
That really doesn't sound ethical to me. Of course if another character says all this to him, he would bring out that he's looking to make the greater good to both hospitals and that he really worries about the people who got fired. Guess what? I you would have been the one that gets fired in the first place, no one else would have lose their jobs... Coward.