Hewitt over thinks, amongst other things, the end of games and other coaches go right by him. Leave the starting 5 in to end the game. If they are good enough to start, they are good enough to end.
Completely agree with you on this one, GS. Way too much subbing, which to me makes it confusing for players to know where they are supposed to be. Unless a reserve player is red hot, go with the same five you started the game with.