The Redskins offensive line should get a lift tonight at home against the Chicago Bears.  Guard Randy Thomas is going to give it a go after being sidelined since tearing a triceps muscle in the second game of the season in Philadelphia.  The running game could use the infusion Thomas might provide.  Clinton Portis had just 50 yards on 25 carries in Sunday’s loss to the Buffalo Bills in Landover.  Both teams need wins to keep alive their slim wild card playoff hopes.