A couple problems
Why was Barb-Donna-Candy given carte blanche? Do they honestly expect us to believe that a morbidly obese woman with a baseball bat would hold the entire trailer park hostage while her crew schemed a takeover? We know that the boys haven't given up their guns because they pulled them on each other during the season. Even if they had forgotten that they were criminals and owned guns, the three of them could have subdued her and "convinced" her that it wasn't in her best interest to continue her attempts at domination.
After donna and candy just left, everyone but julian and sarah takes barb in their arms and embraces her as their new overseer. They completely forgot about her attempts to evict every last one of them. IT MAKES NO GODDAMN SENSE.
And of course we have sarah.... She comes home from jail, leeches her way into Ricky's trailer and proceeds to take it over. Just like I mentioned last season, she pretends like she has any say in what goes on anywhere in Sunnyvale. When will the writers realize that she has no authority to tell anybody what to do. She has no ownership anywhere but it never fails for her to run her stupid mouth.
In many ways this season is better than the last, but it most ways it continues the last season's attempt at making eunuchs of the boys.