I think that pretty well sums up why changes were needed. While nobody wants to see kids get sick, or hurt, or hospitalized, and pushing kids to that point is dangerous, he clearly needs to sort through the kids who are willing to go until they can't from those who will fold. Do not take that to say that I'm implying that hurting kids is what is needed. I'm not. There is still some house cleaning that needs to be done, and winter conditioning is a great way to build the mentality you need as well as to flush out the kids who aren't all in.
I think criticizing the head coach for not coming home is silly, and shows a lack of understanding of situations like this. Frost or Ferentz could do nothing to fix their condition. Leave it in the hands of the medical professionals, send your coaches who are on campus, and go represent your program to recruits. Maybe that seems heartless, but when you talk about what you're sacrificing to fly home and check on a couple of kids you can do nothing to for, his place is on the road, building his program.
I completely agree with this point. People just look for something, anything they can sink their teeth into. I thought it was dumb when if happened before, and it will be dumb if Frost is criticized for it.