No one here knows the dynamics in the McCaffrey household or the Iowa locker room. Both of the McCaffrey boys decisions are understandable under the totality of the circumstances and I don't see any evidence that the three personnel decisions (PM, JM, or TP) are likely to have any snowball effect. Jack was never in the fold. PM may honestly be addition by subtraction. And TP is looking for a pay day and that will open the minutes up to a couple talented younger players. There is nothing head scrathing here.
As for Fran leaving, as we have argued elsewhere, he said he is not done coaching. So, one has to ask where he would go that would be a better coaching situation and improve his family dynamics? Neither Jack or Patrick are good enough that a good program will hire Fran to get them. Fran is old and does not have an overwhelming resume. So again, where he gonna go?
Could he leave? Sure. Do the signs point to that? They do not.