Although Diaw does pass a lot, a majority of the time they are great passes for open shots. His ability to drive and dish is a nightmare match up against immobile bigs. One thing everyone has mentioned before but wasn't something I initially expected, was the screens he sets off the ball to create shots for his teammates. Basically overall he is filling for that "Oberto" type role on the team.
The Spurs have a lot of great PF/C passers on this team (Diaw, Timmy, Splitter, Blair). And overall have a lot of great playmakers, I'm not worried about this roster going into a close game.