Ravens offensive tackle Jared Gaither is out of practice with spasms between his shoulder blades and upper back, coach John Harbaugh said Friday."He can't get into his stance and really play right now," Harbaugh said. "So we have to work that out somehow."Gaither missed Thursday afternoon practice and Friday's morning session. He has also missed time in camp with spasms in his lower back.The Ravens have been helping Gaither stretch out on the side.For the latest Ravens news, follow Jamison Hensley on Twitter. Also, become a fan of Baltimore Sun Sports on Facebook.