The premise that JW can "find" those candidates before he fires Groce, so if he he does not, he could wait another year and then fire him, is a faulty one IMO as well. Unless you fire a coach, you do not know who you will get. If that was possible, as I have said multiple times, schools with a lot more resources, boosters, and networking connections (e.g., UCLA, Oregon, OK State) would have done the same and avoided embarrassing searches. Whitman is a promising AD, but he is no magician, neither is he smarter than everyone else. But he is smart enough to know that he will not have a career in this profession by burning bridges and not following the right protocol (both for the current coach and new one).
IF Whitman decides on to keep Groce, it would mean that he has decided to give another try to Groce, so Groce would certainly be here for at least one more year. It would not mean that he has decided to keep Groce one more year, but would surely fire him next year when in the background works a deal with a coach behind everyone's back. IF he decides to fire Groce, it would mean that he has decided to make a change and take his chances trying to find another coach once that happens, get a search going.
There are currently chances for both happening, either scenario would not surprise me. People are trying to convince themselves that the scenario that they want, is the one that is guaranteed to happen.