Forgive me if I'm just repeating what others have said. I just skimmed the previous posts.
This is a bit of a surprise to me, given the number of backs left on the roster. Plus Bryce is a pretty explosive back---far from just run of the mill, IMO. It's true he has a ball security issue, but we've (at least I've) seen players turn that around, with the right coaching. I kinda thought they were stashing him on the inactive list, to have a quality healthy back in case of injury. Perhaps Bryce wasn't thrilled with the arrangement and was becoming a problem.
It also seems odd for a team that purports to be a running team, to have so few backs. But one thing about RBs is, in a pinch, there are guys who can step in and (hopefully) get reasonable results. Typically it isn't the train wreck you get if you have to do it with some other positions.
If nothing else, the claims Whaley cut Fred BECAUSE of his ego, since he traded for Brown, is finally exposed as total foil-hat wearing BS. But they guy is clearly a gambler.