First, remove the man from your roster. Then pick him up as a free agent and boom, you can change his number.
Foul with all of your worst players and then your last five may foul as much as they want without getting fouled out.
While playing the game hit: C Right, C down, C Left, C Left, C Down, C Up then turn the controller stick clockwise then you should hear a rummm (engine motor) then exit the game and you should see a option click it and you could see the credits.
The Free Throw line can be slowed down by pressing up on the control stick a few times. Accuracy becomes a whole lot easier.