I didn't see anything posted about this yet so...
JLC: "Anyway, as you all surely know by know they signed two O Linemen they brought in to the practice swuad - both tackes - Kevin Sampson and Calvin Armstrong. Cut OL Kili Lefotu and FB Brian Bell from the practie squad."
Redskins Insider
I dont know how interesting this is, probably just giving themselves insurance for injuries, and replacing Lefotu after his "incident." I doubt it means anything as far as the progression of the OL that are injured...make of it what you will.