Zack Lowe has a weill written, in my opinion, piece about VDN's coaching problems. I don't think there is anything in there we did not already know but I think it is worth the read.
He points out the Clipper's problem of a "lack of a system" especially on offense under VDN.
He also writes about what in his opnion are the four main reasons VDN was let go.
1. . Del Negro would still have this job if Chris Paul wanted him to have it.
3. With Del Negro out, and probably unlikely to get one of the head-coaching jobs currently open (or soon to come open), there is a vacancy atop the “Best Coach at Screaming at Opposing Shooters and Stamping His Feet” rankings. Del Negro really redefined this skill. He was like a sixth defender on some possessions, and if you edited out the basketball game happening around him, he’d have looked at times like an adult going through a child’s tantrum.
4. Del Negro might still have this job if the Clippers played defense in the second half of the season, and in the playoffs, as they did over the first 30 games.
I searched for this on ClipsNation before I wrote the Fan Post. Sorry if it has aleady been posted.