Not sure about Celtics and Orlando game fixing  but looking at Rockets and Lakers game it looked like the game was extended to the 7th game to make that extra cash. That game should not have streched to the seventh game.
 Rockets winning lakers without Yao with 20 points on the 6th game and then loosing to lakers with the 20 points again on the 7th game sounds fishy.

Long Live Professional Sports !!!!

Sid