I see no basis whatever for assuming that "it is clear Vrabel is in charge." If by "being in charge" you mean "has final say in all roster decisions," literally no one - no one - including despite multiple opportunities over the past several days, Vrabel himself - has said that that is the case. Even if you are right in assuming that this is a contest in which Vrabel will in the end prevail, I have no idea why - particularly given Wolf's failed performance under two previous coaches - the Krafts would permit a situation in which the distractions of such a contest are allowed. It looks worrisomely like the Mayo situation in which another of Robert's talentless binkies is forced, without any attention to actual qualification, upon the team. It was a stupid basis for hiring Mayo, and it is stupid basis for retaining Wolf.
I have no idea why Vrabel is being such a wuss about it: surprising given the nature of the hype leading up to his hire, isn't it?
Wolf should have been fired when Mayo was fired. I hear a lot of happy talk about how it will all work out, but I have heard literally no statement and seen no empiricsl evidence that that is the case.