A less than positive culture was developed by this staff. Any good coach coming in will not keep any of them. The baby is gone, throw out the water. Start fresh.
I had heard Bo was tired and was ready. Let us hope so. He made many many many problems when he left the first time, causing all sorts of problem for the new incoming staff. He needs to go away completely.
Fresh face, fresh ideas the kids can wrap their arms around, move on, forget the past. Set new horizons.