You can write grfp@nsf.gov and have them reverse your tenure decision. You have to declare tenure by May 1st though so you would want to reverse well before that to allow yourself time to declare again. I was told you can no longer take a reserve year for your first year on NSF though.
You have no obligation to do the research you proposed. You are to stay in the same main field, but you do not even have to do research in the subfield you applied to (ie You can do research in Databases if you got your award for AI, but if you want to switch out of CS altogether you need NSF permission).
I would not get down at all. I was feeling all dejected yesterday as I saw people were getting calls from Mich, but it seems as they are definitely doing it by department not all Mich applicants at the same time. Besides way too early in the game to get down! I was just curious what subdiscipline you were in since you keep referring to the wonky interests!
@coffeebuzzbuzz Where are you applying?
I also was in this first round of UMich interview invites. Bioinformatics is my program choice. I will be interviewing the last weekend in January.