The Seahawks have signed tight end Rashaun Allen off of Minnesota's practice squad, replacing Brandon Mebane on the active roster.
The Seahawks now have five tight ends on their 53-man roster, but with Zach Miller out indefinitely, Luke Willson battling an ankle injury, and Cooper Helfet generally just banged up (as Pete Carroll said after the game), Seattle apparently* wanted to get some depth going at the position.
*It could also signal an impending move with Zach Miller to the injured reserve, possibly, as Miller apparently hasn't responded well to his surgery to remove bone spurs from his ankle(s). That's just speculation on my part right now, but Seattle rarely runs with five tight ends, particularly when they've shown they're happy to use a sixth offensive lineman (Garry Gilliam) as a de facto tight end. This is something to keep an eye on.
Allen was an undrafted free agent that the Seahawks signed out of Southern after the draft this year. He was on the Seattle active roster for the St. Louis game when Seattle was facing similar injury issues with Miller and Willson out.
The Hawks also shuffled some things on their practice squad, moving RB Demitrius Bronson and DE Julius Warmsley to the practice squad injured reserve while releasing LB L.J. Fort. They signed DE Ryan Robinson and RB Cierre Wood to replace Bronson and Warmsley, and now have one open spot on that list. Perhaps Kiero Small will make a return? He was released by the Browns this morning.