Let's cut Keasey... oh wait a minute, he's already gone!
Although M-Rob is a great special teams player and very versitile, keeping Sheets would've added some fresh new legs and explosiveness to our roster. Running backs have a short shelf life in the NFL. It's all about fast and dynamic rookies nowadays.
I would have loved to keep both, but Sheets would make a nice 3 back rotation since Gore is injured often.