according to the rules, after you only have 4 players; the one who fouled out last is the one who returns. Therefore you can't get around that rule and foul out 3 players to get your star back.
well what you do at that point is bench your start.. send out the scrubs and have them foul out so you only have 5 players left.. put your star back in . . and then he cant foul out at that point !!
They would lose.. You can't play 4 on 5 against NBA players. They'll just pass the ball around. It'll be like monkey in the middle. This isn't playground basketball with a bunch of scrubs. They're professionals.