Pierce was tossed with 7 seconds remaining in the first half of Saturday night's game against the Milwaukee Bucks.
After a long video review determined that Pierce was guilty of a clear path foul, he disputed the call and was whistled for a technical. A few seconds later - before Milwaukee's Brandon Knight could take the first free throw - Pierce was given a second technical and tossed from the game.
Instead of heading for the tunnel, Pierce took a seat on the Wizards bench. One of the game officials, Jason Phillips, then gestured for Pierce to leave. Only after Wizards coach Randy Wittman also gestured did Pierce get up and leave.