Or, he could have been told to ease off and cruise to the end? That's what I would've told him to do.
He had a huge tyre advantage on Alonso by the time he caught up to him and he only had a couple of half-chances to overtake, the latter wrecked by Webber who'd seemingly forgotten where his brake pedal was. But, he couldn't get past the guy. If he couldn't get past Alonso, there was no way in hell Massa was going to get through on similar tyre conditions. I really doubt Hamilton would've taken Kubica, but he certainly wasn't going to lose 3rd if he just sat back and eased off.