I don't see Stoops leaving. There's rumors he's got his feelers out for the NFL and I think that's really where he wants to be. If he wants to get to the NFL soon, OU is a much better job than a UM team that will need a few years of rebuilding.
I'm not a Miami guy, but from my POV, I think they'd be better off with Spurrier than Shannon. Shannon seems like a good guy, but I'm not sure if he has what it takes to be a HC just yet. I just feel like Spurrier has enough fire and enough experience and enough knowledge to fit right in in UM. Shannon has built a great defense, but there have been a lot of great coordinators who just aren't cut out to be coaches and we don't find that out until they burn themselves out.
Either way, I saw a good load of potential at UM tonight. They have athletes, they have superstars, and if they get the right person....if they get ANYONE who can bring out the best in them, they could be dangerous soon enough.