"I'm not going to expound it any more than that. It's going to remain an internal matter," Carlisle said. "The only thing that I'll say, in two-plus years here one of the things I've grown to respect and admire about [owner] Mark [Cuban] and his franchise is that everyone's treated great, but everyone's held to a high level of accountability, and we expect a lot. We're going to make sure things are right."
Haywood is averaging 3.7 points and 5.0 rebounds in 19.5 minutes per game. His absence put more of a burden on starting center Tyson Chandler against Tim Duncan and the Spurs, whose 12-game winning streak was snapped by the Mavericks. Coming off a 35-minute performance Wednesday at Oklahoma City in which he scored 17 points and grabbed 18 rebounds, Chandler posted 19 points and eight rebounds in 32 minutes against San Antonio.
The Mavs activated center Alexis Ajinca for the first time this season, and he contributed two rebounds in three minutes. Former Spurs center Ian Mahinmi was also active, chipping in three points, four boards and a block in 14 minutes.
Haywood participated in the team's morning shootaround, but he was not with the team when they arrived at the AT&T Center. He was sent home to Dallas.
The last player suspended by the team was troubled project Shawne Williams. The Mavs dismissed him, but he remained on the roster after playing 15 games in 2008-09.
Jeff Caplan is a reporter for ESPNDallas.com. You can follow him on Twitter.