1. Randolph is trying to get into Griffin's head.
2. Griffin's aggressiveness is getting into Randolph's head.
3. Randolph's frustration about being only 75 percent of himself health-wise is starting to affect his on-court temperament.
4. Randolph saw someone spitting in Griffin's direction and volunteered to block his path.
I'll go with some of No. 2 and some of No. 3. What's your explanation?