As good as the Steelers' offense looked this morning, they looked equally poor this afternoon. There were multiple fumbled snaps and handoffs, poorly run routes, and a general lack of precision and purpose to the afternoon session. Among the lowlights for the offense was the verbal lashing Cedric Humes received from Coach Cowher.He said: "Come on Cedric, run. I'm sick and tired of seeing two things out of you. First, you try to run everything out here (gesturing outside). Then, you're always looking back to see who's chasing you."*The offense sputtered in the two-minute drill as well. Cowher screamed for the unit to start over after Charlie Batch had a ball batted in the air by Brett Keisel that was eventually picked off.*The offensive line suffered a brutal day. Two guys went down, although both injuries appear to be relatively minor. Chris Kemoeatu hurt his wrist and was sent for X-Rays. The good news is that they came back negative. Trai Essex also went down with a pulled groin midway through the afternoon session. He's expected to miss 7-10 days.*The injuries have really opened the door for rookie Willie Colon, who's had quite a camp thus far. Colon lined up at left tackle with the first team this afternoon and is almost assured to play quite a bit in the preseason games. If he fares well and a more serious injury occurs during the regular season, the rookie out of Hofstra may find himself playing regularly.*Hines Ward once again sat out practice. So did Porter, Kudla, and Issac West.