If you would have seen the game and want to complain about the refs, you would have seen a horrible call earlier in the OT when Shaq cleanly and clearly blocked the ball on the way up, yet it was called a goaltend. That was two points for the Grizz that was a complete gimme. If there was a "challenge" in the NBA, that shot would have never been a goaltend, and the score would have been 111-110 Lakers.
Also, the reason they the shot by Shaq at the end of the game counted is because he was fouled on the shot, Shaq actually shot a free throw after the shot which many of the sports highlights shows neglected to mention. The foul was called with .4 left on the clock, so the shot counted on the continuation.
That said the Lakers played like crap, they should not have needed OT to beat the Grizz.