They were playing audio of Wall's presser immediately after game 3 on XM radio. A couple of the reporters tried to lead him down the path of calling Olynyk dirty and he wasn't having any of it.
The point that he tried to drive home was that the Celtics are a physical team. That we are a physical team who gets away with playing with our hands because we have developed such a reputation of physicality. I honestly think that is a fair point.
I found two aspects of his dialogue compelling. First, he tried to stress that since we play so physical, that the Wizards need to man up and overcome our physical defense. The other aspect was that he went out of his way to stress that just because the Celtics play physical, doesn't mean we are playing dirty. He mentioned it multiple times that just because a screen may be illegal, or if we use our hands, doesn't make us dirty as the intent isn't there.
If we are looking for a villain in this series to rally against, there is no way it's Wall. The guy is a class act.
Edit: Sorry I wrote this before class, so I don't have time to go looking for an audio of him after the game.