Austin’s Michael Dell could give San Antonio Spurs more leverage

The timing — after 5 p.m. on a Friday — of the San Antonio Spurs announcing landmark changes to its ownership structure was an interesting move. That’s typically not how to reach the widest audience. In any case, it’s the devil in the details of those big changes for the Alamo City’s only major league sports franchise that should pique local leaders’ curiosity. One of those moves was the elevation of Peter J. Holt to managing partner of the Spurs. That makes sense, given the Holt family’s…