Mike had 6 tackles to lead the team, though it might not been against 1st string offensive linemen that was as good as could have been asked for.
I think he did better than was expected.
In the end though, apparently what doomed him was that he didn't make any impact on special teams, and if you're a projected 2nd stringer, you'd better at least better make an impact on special teams, or else there is no justification for keeping him on the squad.