1) Jim Harbaugh would crawl over broken glass for the Michigan job.
2) Harbaugh and Michigan AD David Brandon have had a relationship for years, and Harbaugh's previous comments about Michigan's academics will have no bearing on him becoming the coach there.
3) It was Rodriguez's decision to run the 3-3-5.
4) Rodriguez has failed to allow either of the defensive coordinators he's hired to actually run the defense, but has instead allowed the position coaches he brought from West Virginia with him to have a say as well. The current D.C. doesn't do any recruiting.
5) It's unlikely Rodriguez would make "wholesale" defensive staff changes beyond the current D.C. because the rest of the staff are buddies loyal to him.
6) Rodriguez knows if Michigan fires him he gets $4 million and will likely have another BCS coaching job in 30 days, so I doubt he's going to throw his buddies under the bus.
7) If Rodriguez is fired it is to hire Harbaugh and no one else. There will be no coaching search, except to publicly satisfy EEOC requirements, so discussing any other candidates is moot.