If he wants to make sure he retains players on the roster now, try to go after transfers on the transfer market now, hire assistant coaches now then he needs to start talking to everyone today. Yesterday actually. If you know you are doing this you don't twiddle your thumbs for a couple of weeks during such an important time period. And before you say he could be doing all that without being officially announced just stop. It would get out in a matter of minutes and the university would be forced to announce anyways.
So yeah, it's crazy to think he is delaying taking the position weeks to watch his son not play in the tournament. Could it be happening, sure. But I would question his commitment to making it work if he is letting this crucial period go by without working on putting his program in place.