Let's get right down to business. Here's how I see the final 53 shaking out.
Offense
QB: Matt Hasselbeck, Seneca Wallace, Charlie Frye
FB: Leonard Weaver, Owen Schmitt
RB: Julius Jones, Maurice Morris, TJ Duckett, Justin Forsett
TE: Jeb Putzier, John Carlson, Will Heller
WR: Courtney Taylor, Nate Burleson, Jordan Kent, Logan Payne, Bobby Engram
OT: Walter Jones, Sean Locklear, Porkchop Womack, Ray Willis
OG: Mike Wahle, Rob Sims, Mansfield Wrotto
C: Chris Spencer, Steve Vallos
Defense
DE: Patrick Kerney, Lawrence Jackson, Darryl Tapp, Baraka Atkins, Jason Babin
DT: Rocky Bernard, Brandon Mebane, Red Bryant, Craig Terrill, Howard Green
LB: Lofa Tatupu, Julian Peterson, Leroy Hill, Lance Laury, DD Lewis
CB: Marcus Trufant, Kelly Jennings, Josh Wilson, Kevin Hobbs
S: Deon Grant, Brian Russell, Jordan Babineaux, C.J. Wallace, Jamar Adams
Special Teams
K: Olindo Mare
P: Ryan Plackemeier
LS: Jeff Robinson
Miscellaneous
PUP: Deion Branch
IR: Ben Obomanu (broken clavicle)
Trade: David Kirtman
Practice Squad
Kyle Williams
Kevin Brown
Brandon Coutu
Michael Bumpus
Kelin Johnson
David Hawthorne
Patrick Murray
Joe Newton
Samuel Gutekunst
If you're curious how Forsett sticks, I would guess his extreme self-discipline in the face of touchback after touchback impressed Mike Holmgren.
Mike Holmgren said in the post game interview that Obomanu suffered a broken clavicle.