Most of last season? He only played 5 games before he was hurt and spent the rest of the season on the 9 game. He was one of the Esks best players when he played.
His injury is the only reason I can think of for them waiting until now to release him - sort of a pre-emptive release like they did with Jesse Lumsden when they said he wouldn't have been able to pass a physical. If that's the case, it makes me wonder what the heck kind of leg injury?
If it was a cap thing, I think Tillman would have released him when he did his SMS purge earlier this year.