Not a Strong guy, but it's worth pointing out that the coaches with the lowest # of commitments tend to be the ones that aren't sure to be back. Charlie has 9 (as of 2 days ago). You'll see that among the top 20-30 classes, this holds true also: Chip Kelly, Bob Stoops, etc.... Always lets you know who's in play. Not saying they're sure to leave, but it's a good indicator.
I doubt Stoops and Kelly go anywhere... Kelly has a lot of money behind him and built his own top-tier program with the Nike money. He may flirt to get a raise, but I doubt Oregon lets him go anywhere, they were nobodies before him.