I remember how he blew teams away in his workouts the year he came out, so much so that he became one of the biggest risers in the weeks leading up to the draft, turning himself from a projected 3rd RD Pick to a 1st RD Pick.
I think Seattle only let him walk because they are experiencing what all successful teams experience, when you win everyone wants a raise, and you can't pay everybody. Heck, they still have Kam Chancellor holding out.
Anyway, their loss was our gain.