Did Lebron James, Dwyane Wade, and Miami Heat just give up?

As the Miami Heat were losing to the Dallas Mavericks in the final minutes of Game 6 in the NBA Finals, players including Heat stars Lebron James and Dwyane Wade appeared to just give up.

Multiple players appeared to have exasperated looks on their faces and did not make the extra effort to contest shots, despite only being down by 9 points with a minute and a half left in the game.

Broadcasters for ABC noted the body language on the part of Miami Heat players.

In addition, Miami suffered from an abnormally poor free throw shooting night, going only 20 of 33, which is usually due to a lack of focus.

In the most important game of their NBA careers, did Lebron James, Dwyane Wade and the Miami Heat simply just give up?