I think it's funny how Darin Erstad gives you more versatility in games when he plays less positions, is a worse hitter, and has injuries that can keep him for being an adequate fielder.
Eric Hinske MASHES lefthanded pitching. He can give Youks, Lowell, Pena, Drew, or Manny a day off.
He has a lot of worth coming off the bench. If he is starting regularly, yes it's a problem. But as a role player? I think he fits for the Sox quite nicely.