I'd agree with most of the above, but couple points:
1) A manager's job is to put his team in the best position to win. When you bring in a guy who's obviously struggling back for an extra inning with a fresh long reliever,(this is the key point) you're not giving your team the best chance to win. It doesn't matter whether the pitcher is supposedly an ace or not, if he's getting hammered, he shouldn't be out there.
2) This is about Francona, because he's the guy you're defending. I don't dislike the guy, he's a good fit for the team, but as i said, he's an awful tactician, because he's the ultimate player's manager. I'm not in the dugout, so i'm only speculating, but he seems to be easily persuaded by pitchers to get that "last inning" or that "last batter" and more often than not, it winds up costing him.
3) The Girardi comment was tongue-in-cheek, i wouldn't want him within a 100 KM radius on Fenway, but that doesn't excuse Tito's shortcomings as a manager.It's either him or Farrell, but there seems to be an issue with both the conditioning and usage of the pitching staff this year, a pitching corpse as talented as this one shouldn't be this bad for so long.