It seems ass-backward, but instead of Isaiah Washington leaving the show, it appears TR Knight may be the one cleaning out his locker at Grey’s Anatomy. After all that’s gone down on the set with the name-calling and coming out and what-have-you, “he feels that the atmosphere there is so toxic and unhealthy,” that he wants out, a source tells Jeannette Walls. He’s “disgusted by how it was all handled.” Knight’s people originally had no comment on the subject, but later called Walls to say the rumor was “one thousand percent false,” and the network chimed in with “irrefutably untrue.” So he’ll probably be leaving. If one good thing has come out of this ugly mess, it’s that bloggers not familiar with the bible can now spell “Isaiah.”