I really don't think LeBron did the wrong thing there at the end. He drove the ball, drew the defense in, and got Marshall a wide open 3 in his favorite spot. That said, LeBron had another terrible shooting night. He needs to get his outside shot together.
A lot of the onus on this one falls on Z's shoulders. Had he made that 2nd free throw, it would have changed the whole scenario at the end. He put them in a very tough spot with 30 seconds left.
Marbury made a lucky shot, but the Cavs played with fire and got burned. They played down to their competition and you can't do that in the NBA.
I hope they come out with A LOT more fire against Chicago. They better or it will be ugly.