I”m not sure if Garnett was simply ready to be done for the night — or if the ref was grandstanding, but Garnett was ejected early in the Wolves game vs the Grizzlies.
Garnett was whistled for the technical when he spiked the ball down in frustration after being called for a foul while defending Grizzlies forward Jeff Green. Since it was the second time he was T’d up, he was automatically ejected.