I guess Kermit Washington's punch that nearly killed Tomjanovich wasnt' dirty because it wasn't premeditated.
Nor Karl Malone's elbows to Isiah, Nash, or David Robinson. After all, he didnt plan it out beforehand in the locker room.
All you do is lose credibility by arguing the obvious. Arguing Bowen is not dirty is like arguing OJ was innocent. The overwhelming preponderance of evidence to leads to a logical conclusion that he is absolutely dirty and probably the dirtiest player in today's NBA. Unless you just to ignore it out of pure bias, which is obviously the case with some (but definitely not all) Spurs fans.
Deep inside, every fair minded Spurs fan knows Bowen is dirty. Very dirty.