When you say "He wasn't going to accept a back up role" you act like he had any choice in the matter. He was under contract. He had two options .. play for the Cowboys or find a new career. Do they worry about Spears "not accepting a backup job' when they experiment with moving Ratliff over to defensive end? Why would Akin be any different.
Even if you're right, the Cowboys 'threw in" a starting middle linebacker for nothing in April. They could have gone into training camp with at least giving mouth service to an open competition and see what shaked out on the injury front. It's not like injuries to Zach Thomas or Kevin Burnett would come out of the blue. If at the end of training camp it's determined he's not needed, give him away then. Or better yet, wait and see if a team doesn't break camp desperate for LB's after preseason injuries and actually try to get something. Not only did the Cowboys sell low on an asset, they just gave it away.