The Seahawks (and every NFL team) have to cut down to 75 players by Tuesday, September 1st, at 1 pm PT. This is the toughest part of the year for general managers and coaches, as roughly 480 players will lose their jobs over the next few days.
Seattle's cuts are going to be very difficult to predict, as there are a few really good position group battles going on. I'm guessing there's some fluidity to depth charts right now, and the Seahawks will likely feel conflicted about a few of these decisions.
Nonetheless, it must be done.