I may be wrong, but I believe this "shut down" idea is a myth that somehow has gained a little momentum in recent years. If a guy is injured sufficiently, he won't pitch. If he's ok, he will. Management may be a little more cautious if it's late in the year and they've got nothing to play for. But only marginally more. Healthy guys aren't going on the shelf. It's not like you can put those innings in the bank and save them for a rainy day. If you're a young guy, and you're not damaging yourself, that additional experience you get in September may pay dividends next season.
Now if you could confirm whether Bedard is actually nursing any nagging injuries, that would be great to know. I miss that consistent guy I picked up a couple months ago.