With the game at its tightest, a NBA referee currently under investigation by the FBI for extending a playoff series to benefit the NBA and their financial needs, calls back to back off the ball calls on Garnett and Pierce, giving them both 5 each. This pull Pierce off of Kobe and opens the lane. In fact 4 calls were called between the 4 minute and 3 minute mark of the fourth, 3 of which were off the ball and unseen on camera, which happen on every play on both ends of the floor.
After the Lakers extending their lead somewhat, the Celtics play more tough defense, fight through many obvious fouls on rebounds that are not called and down by two with under a minute to go an obvious reach around foul that is called even at the jr.high school level goes undetected by above mentioned ref, and Kobe gets a breakaway dunk
In my opinion, when Pierce grabbed that rebound before the so-called Kobe "steal" play, pierce got absolutely mugged by Odom and Gasol under the hoop and no call. Then, on the dribble up the court by Pierce, Gasol blatantly grabs KGs jersey right before he goes to set the pick and kobe reaches in.