Perhaps. But I suspect that he was limited in his recovery based on the rest schedule once he came back.
If we go with the premise that he was seeking a trade to a contender, then the last thing he would want would be to take a game off after his first stint of three "spring training" appearances, and then take two games off after four games of 29 MPG (and play no back-to-backs in either) in the run-up to the deadline, not if he didn't have to. That would seem to indicate that his knee wasn't fully healed to teams trying to acquire him. In other words, I think if he wanted to get moved and was really good to go, he would have been going.
Seems to me he was gutting it out but wasn't really good to go. That might also explain why there were rumblings that the Kings couldn't get the value they wanted for him in trade. Perhaps nobody really thought he was playing in the playoffs this year anyways.