Phew. I just saw on NFL Network that it is indeed just a bone bruise, and Holmgren fully expects he will start during the opener.

SeattleTimes confirms:

http://seattletimes.nwsource.com/html/seahawks/2008142683_webhawk28.html

"He's very important to this football team," Holmgren said. "In preseason, they have to play and get ready to go, but you just kind of hold your breath all the time."

Indeed. I wasn't too worried until that prank post which nearly gave me a heart attack. So, again, phew.