No, it's actually not.
If you allow a certain behavior over and over again, you can't expect people to say "Yeah, you're right" when you finally have had enough. You've allowed him to repeat the process twice(after the first time) and now, while he's working on it for the 4th time, you expect people to care. As you can see, most are saying "Why did you let him keep coming back?"
The solution isn't a mid-season replacement. The solution is to boot his *** after the season because you should have done it two seasons ago. He was warned after the first time, he did it again. He was still allowed back. Shockingly, he's doing it again.