I wouldn't say we NEED Baby; we need a second solid big off the bench after Sheed -- whether that's Baby or someone else -- and a 5th big as an emergency fill-in, which could very well be Scal, even if we trade him.
That said, I was pulling for Odom to go to Miami, because it would've hurt the Lakers, but having him back there just means that it'll be all the more sweet when Boston beats the Fakers in next season's Finals.