I agree. I would keep Rolen and try to move guys like D. Young or Hairston.
Your hitting will be solid once Giles comes back.
I would pick up a starter and drop or trade Otsuka. He won't get saves, and unless your league counts holds, he doesn't help enough in the other categories to warrant a place on your team.
I never smile if I can help it.... Showing one's teeth is a submission signal in primates. When someone smiles at me, all I see is a chimpanzee begging for its life.