Let catch Diaz catch both France and Brown in the rotation from now on. Diaz caught him in AAA last year. Their was no reason for Dusty to move him off besides to stick it to the fan-base.
Dusty, let Brown get through the 5th hopefully unscathed and then pull him. Let him leave with 5 shutout innings if that ends up being the case. Don't try to milk a 6th inning out of him.