Berrios didn't pitch well, but you can't ignore the fact that the extra out directly contributed to 4 extra runs that inning that shouldn't have crossed the plate. He was already likely pretty fatigued at that point as his pitch count was very high, and the extra out forced him to throw more pitches before receiving some rest in the dugout. Most of the rotation is pitching well recently aside from Berrios. It's a pretty easy decision in my view to keep Berrios off of the post season roster, but even if he makes the roster it's very unlikely that he would receive any starts.
The bullpen is starting to look a lot better in recent outings as well. They have a ways to go before we can say they've put the August struggles behind nearly everyone aside from Little has looked much better their last few times out which is at least a potential starting point to better fortunes moving forward.