Anytime someone isn't on the injured list (even though they may still have an injury) and they don't play it's a DNP-CD. I'm pretty sure he's injured right now but when he comes back, I expect him to start.
I wouldnt necessarily see it as a knock on Dickersons talent. The Grizz are really loaded talent wise.
Grizzlies need to unload a bit of depth for a star player. Get rid of dickerson/battier/williams and pick up a nice pg/sf duo.