This was my assumption when the news conference was announced. Hand-picked interim coach while Matta tries to get healthy. If Matta gets better and can re-commit to being a fulltime coach, he's the best guy for the future too. If not, you'll know during the season he won't be back and you can begin a normal coaching search, AND check out the interim guy as an option.
Or you could just fire the most successful coach in program history, at the worst time of the year, with no plan for a replacement, and then get turned down by a guy nobody wants anyway...