There isn't a coach in the NBA that leaves a player in the game if he picks up his 2nd foul in the first quarter...
So, Quin can just let all the other coaches make the decisions for him. I guess this is obvious, but the only thing that happens when a guy fouls out is that he is replaced by another player. No different than any other substitution.
This is similar to football, when it's fourth down and we are told "you can't go for it on fourth down! it is too risky, you might turn it over on downs!" so, they punt... and turn it over on downs.