I actually got to watch a good part of the game last night. I don't use stats as the final arbiter of a player's ability or contribution. What I saw was that Rondo probably was our best player on the court even though he missed shots he might make sometimes.
There was one play where Sully had the ball in the post and Rondo's man came down to double team. Rondo was clear across the court. Clearly the game plan was leave Rondo open. That is an unusual thing to do with a team's best player. This is part of why he gets so many rebounds; much easier when your man leaves you as soon as you don't have the ball.
Rondo simply was not good enough to carry the team last night. He made some good passes, definitely contributed but I still saw a team that isn't that good with Rondo as its best player. And that was against Brain Roberts who was +19 on the night. The team actually went more as Green went last night. I am not saying Green is a better player, just that when he was hitting, we led or came back.
I also don't buy the Rondo isn't healthy or fully has his timing back, wait until next year, argument. I think Rondo is fine. This is what Rondo is and always has been.