I think among these options the one youre most likely to get some points from is Bush. Moreno, like you noted, is injured and if he does play will likely see limited carries and won't be very effective in those carries against a fairly tough Titans run D. Grants is quickly fading in terms of touches, both due to his age/ineffectiveness and the emergence of James Starks. As for Ricky Williams, he is clearly #2 in the pecking order in Baltimore behind Ray Rice and isn't likely to catch any passes. I would, therefore, have to give an ever-so-slight advantage to Bush just because he is likely to get some points for you off receptions, and none of the other guys are likely to either catch many balls or produce much anyways. If you feel uncomfortable with Bush, I would see Ricky Williams as your next best option.