There was a cut on the ball. Plumlee shook the ball at the ump to indicate the ball was f'ed up. He thought the ump granted time so he tossed the ball away. Ump came out and said he didn't hear him so he didn't call time. He then motioned for both of the runners to come in and score.

The ump directly impacted the game on a situation that had no impact on the game. Plumlee did screw up a little, but this was mainly about the ump making a call you NEVER see.

Lemon should have gotten thrown out to fire up the team and show that he has their back.