I don't see a need to panic here. Portis was a top back until this season. Betts performed well in 2006 when the team needed him and was doing the same this season before getting injured.
In 2005 and 2006 the Redskins didn't need to draft another back.
Now they do.
It's simply time to address a need that has come to the surface.
NO team is able to address all of its needs ahead of time and anticipate all eventualities.
If that were the case the Patriots would not be counting on the secondary they have starting right now.
Anyone see Drew Brees and others this season torch the Patriots back seven?
Looking at the team objectively, the team DID address the DL in the offseason with the moves for Orakpo, Haynesworth and Jarmon. That should help the next HC and DC.
The team also is finally getting production from Thomas and Davis, so the depth picture at WR and TE might be better than we could have expected 10-12 weeks ago.
So, there is some reason to be optimistic.
But at the same time there is major work to be done on the OL, RB, QB and S.
Landry needs to be moved to strong safety, Reed can become the backup. The team then needs to find out if Kareem Moore can take over at free safety with his speed or whether the team needs to look for a mid-tier vet in FA.