I think Grimes has given us reason to be optimistic. He seems to be making the right moves. He comes from a pretty good program. He was a pretty good OL coach when he was here before, and there's no reason to believe he hasn't just continued to improve and learn.
So I like to think that BYU has a chance to be a pretty good team on offense this year.
But I wouldn't go so far as saying he's turned the team around before the first game has been played and we've had a chance to see what he's actually done.