I don't see where he's been inconsistent. He's said all along that he's interested if the right thing comes along. And he has confirmed that BC is not the right thing.
And I don't see how anyone who understands anything about the guy could be remotely surprised by this. He loves the game and he's still passionate as hell about it, and now that he's healthy he has a lot of energy to spare, too. Did you see him watching the Villanova game? Did he look relaxed to you? He looked pretty intense to me. He can almost taste another Final Four and I'm sure it's driving him crazy because he knows he has a lot to give, but it's Ollie's team now and he can't be as involved as he would like to be because that wouldn't be right for our situation.
You have to know that he's seen what Larry Brown is doing, and although somewhat different, he's also taken note of Pat Riley's position in Miami and Phil Jackson's new deal with the Knicks. I think he'd like something like that for himself at the college level. That's why he wants the assistant-in-waiting deal, so he can do all things he wants but lay off some of the daily grind of the season on another coach, in exchange for that coach getting his pearls of wisdom and the program benefiting from his cachet.
Not sure what programs would consider this arrangement, but I'm not surprised at all that he's interested.