He said it in a professional way, but he basically said he's playing his guys too much, he needs to play Dunleavy. Washington's guys come in after a break and the Bulls guys are gassed.
He said in the NBA you have to make adjustments, and not just at half time, sometimes each quarter, sometimes you have to make them every 5 minutes... he was just questioning his in-game adjustments mostly, and saying if they make some slight tweaks to the minutes then maybe the games play out at the end differently.