Last night, Rondo didn't deserve the stage. He played very poorly. That's not Paul's fault.
I agree generally that focus should be taken off the "big three", and should be placed on the team as a whole (or, if it needs to be segregated, on the "big four".) However, I think overall the team has done a fantastic job in these playoffs of getting everyone opportunities when they're playing well.
There did seem to be some tension between Rondo and Pierce at points in last nights game, which is unfortunate. However, I'm sure it will be smoothed over, if it exists in the first place. What we need is Rondo to play like he normally does in Game 5. If that happens, all wounds will be healed.