As much as people would like to get rid of him, he's still a contracted employee of the company too. The BOD doesn't want to or can't afford to kick him out, and they must like the brand of #### he serves because they keep renewing his contract.
Go! was doomed for failure from the beginning. I honestly don't know what it would take to get the uppers canned. I guess running the company into the ground isn't enough these days.
And FWIW, I've heard that Mesa actually has a pretty good case built against DL, and has a good shot at winning.