Bernard practiced despite a toe injury. Spencer was hurt toward the end of practice Wednesday. He did not practice Thursday.
Locklear has not practiced since suffering an ankle injury two weeks ago. He missed the team's game against Kansas City while serving a one-game suspension for violating terms of the NFL's personal-conduct policy. Locklear had been expected back this week. Tom Ashworth continues working with the starters.
The Seahawks are already without starting quarterback Matt Hasselbeck and starting running back Shaun Alexander. Receiver Bobby Engram, a key contributor and former starter, is practicing only sparingly while dealing with a thyroid problem.
Linebacker D.D. Lewis (toe) and defensive tackle Marcus Tubbs (knee) also remain sidelined. The Seahawks miss Tubbs because he is one of their most disruptive interior linemen. He also has the size to hold up against power running games.
The Seahawks also have missed strong safety Mike Green, a former starter in Chicago who probably would be starting now. The Seahawks benched starting strong safety Michael Boulware last week. Green is out for the season after suffering a career-threatening foot injury.
The team's problems at running back also have been exacerbated by the absence of fullback Leonard Weaver, who went on injured reserve before the season. Weaver was a punishing runner whose style probably would help now that Alexander is unavailable.
Up front, the Seahawks are working Floyd Womack back into the lineup at left guard. He has missed the past six weeks with a sprained knee. Womack was named to start ahead of Spencer, a decision that pretty much became moot when Spencer suffered his knee injury toward the end of practice Wednesday.