(Renton, WA)  --  Seattle Seahawks head coach Pete Carroll says safety Earl Thomas will no longer handle punt-return duties.  Carroll says wide receiver Bryan Walters will be returning punts, while Thomas will strictly focus on his role as a defensive back.  Thomas muffed a punt reception during last week's game against Green Bay, resulting in a turnover.  Carroll says Walters, who's a backup receiver, has great hands and makes good decisions when returning punts.