Thing's don't seem to be getting much better between the troopers and General Krell as is evident by the synopsis for next Friday's all-new episode of The Clone Wars, "Plan of Dissent" (S4 Ep. 9).
"After the Republic conquers an Umbaran airbase, General Krell orders Rex and his men on towards the heavily fortified capital. Realizing there's a better plan, several clone troopers disobey orders to carry out a rogue, covert operation."