He showed Boston and the NBA as a whole that yes, Rondo is mercurial. I don't think he does it on purpose, at least not entirely. For example, he certainly doesn't miss free throws on purpose just because he is dogging it. I doubt he misses 3s on purpose either. Not shooting when he has a shot is on purpose and believing that he was not expected to play defense may be somewhere in between.
I do think Rondo "padded stats" to a degree. Those wide open shots he would pass up to thread a pass to someone were not intended to make the other player better or help the team win. They were because missing shots was in his head and he preferred from a personal perspective to get an assist added to his stats over a missed shot.
Rondo had a great game. That is the Rondo we all dreamed of for the Celtics (and I think Danny dreamed of when he said this was going to be Rondo's best season ever). Rondo making those shots is lethal NBA weapon (as Tommy has said). He just never made them for the Celtics. Maybe he really had a problem with Stevens, maybe is was coasting to get to his next contract, maybe what you surround Rondo with makes a huge difference, maybe he is just mercurial, I don't' know but he was not doing it here, that is for sure.
Ironically, it appears that Danny may be right, Rondo may have his best season ever. Unfortunately, it is not going to happen in a Celtics uniform. He had his chance to do it here but didn't. Now he is in Dallas and doing it (at least sometimes). Let the debate rage on.