I'm starting to wonder about another possibility concerning the DC position. PR could already have an agreement with a coach who is fulfilling his obligations to his present school. Not all that common in the days of what's in it for me, chizik-style coaches, but still a possibility.
I, for one, would not be too impressed by a coach currently recruiting athletes and their families, asking for a committment to him and his current school, knowing all the while he's leaving in a few days to bolt for ISU. That's the definition of a "what's in it for me" coach...