I just dropped him...I don't necessarily recommend everyone out there do the same but he's a borderline rosterable guy in a mixed 12-14 team league. His value comes completely from his speed and I have several other options (Crawford, Ibanez, Granderson, D. Roberts, Dye) for a max of 4 slots. I agree with the previous poster - a speedster with a tight hammy isn't a good thing and if he's borderline FA material in your league I think it's time to send him to the WW if you have better use you can make of the roster spot.
Hope springs eternal
grows like ivy on the vine
then dies in the fall
--Haiku for a Cubs Fan, The Loveable Losers