The point was, what works during the regular season (against Goose Creek, West ashley, etc.) DOESN'T necessarily work when playing against better teams during the post-season.
I'm sure someone here will point out that it worked in the Palmetto Cup, but THAT was a completely different situation -- 5 games in four days, as opposed to five games in 12 days.
With 20 minutes left in a 1-1 match, with momentum going your way, you don't wholesale substitute a bunch of players for 8-10 minutes, as you did during the regular season. Instead, you rotate one off at a time, over a period of 8-10 minutes, thereby maintaining continuity and momentum.