Here's an update:
Dallas is a full 6 games up on Phoenix.
Phoenix is only 3 games up on San Antonio.
San Antonio is 9 games behind Dallas.
If Phoenix falls behind San Antonio in the standings, it will be extremely difficult for them to beat San Antonio in the second round of the playoffs.
Dallas, on the other hand, will get the easier path to the conference finals and will get to play the survivor of San Antonio/Phoenix.
There is a very good chance that we'll see a San Antonio @ Dallas conference finals.