Even the show had to admit that this season they changed some of the cast to try and save the show bringing in DJE was suppost to do that. The problem was IMO that they moved away from the reason for the shows concept, until the last few eps of the show. While its fine to branch out, they missed the mark again IMO this season.
Not to mention the fact that they felt the need after one season to do a cast change like that just felt like they had no faith in the cast they set the show up with, and that they felt that DJE as good as he is, would be the saver of the show.
I can't say I didn't see this one coming and I didn't even pay attention to the ratings, to me it was like a revamp gone bad.