However, the Packers picked two younger receivers in the 2008 NFL Draft, creating a logjam at the position. Robinson was deemed expendable, and the Packers released him on May 9, 2008. Packers General Manager Ted Thompson said, "I think a lot of Koren. I'm very proud to be able to see him turn things around. He's a true professional. He helped us in the locker room. He helped the young guys learn to be pros."
On September 16, 2008, the Seahawks signed Robinson, due to the large number of injuries at the receiver position. In his second stint with the Seahawks, Robinson broke the franchise record with the longest catch in team history. Back-up quarterback Seneca Wallace threw a pass to Robinson that went for 90 yards and a touchdown on the Seahawks' first play from scrimmage against the Philadelphia Eagles at Qwest Field in Seattle on November 2, 2008 which was also the longest pass in team history. On January 26, 2009 it was reported by Pro Football Weekly that Robinson was not expected to be back with the Seahawks the next season due to a chronic knee injury.