Maybe they misread that the Spurs were still looking for a big to add to their roster and felt these games would be an audition for that spot? Maybe they slugged back a couple 5 hour energy drinks before tipoff which carried a long buzz throughout the game? Or maybe their number finally came up for their time to be in the spotlight for once in their careers.
I'm great at multi-tasking -- I can waste time, be unproductive, and procrastinate all at once. Ain't life grand!!