You're joking, right? You can't throw a rock on this forum without hitting five people who are mad at Baldelli.
I agree that the front office should be closely examining why Baldelli has faltered this season (I think the loss of Mike Bell has hurt him a lot) and how to change that going forward. After two successful seasons out of three, I'm not ready to move on from Rocco quite yet.
As for Johnson, I think your evaluation is pretty unfair. Just 12 months ago, he was a pitching genius for improving the squad drastically over a couple of seasons, culminating in the Twins posting a very good pitching staff last season. Until three months ago, no one questioned his ability to handle MLB pitching and it feels like a real knee-jerk reaction to decide he can't do the job because everything blew up in everyone's face this season. There's plenty of blame to go around this season from the backup role players all the way to Derek Falvey.