URI and Xavier would not be considered because I'm talking about schools that fired a coach, not a situation where a coach was hired into a better job and his underlings took over. When a coach is hired away from a university for a better job, the retention rate of recruits is higher in that situation for multiple obvious reasons. No school is hiring Danny Manning away from Wake Forest for his performance here. Thus, the comparable schools would be where a coach was fired because the program was headed in the wrong direction and a new staff took over.
Show me the Top 150s that bled away excluding X and RI.
This is sounding much like your premise about immigration (that you never came back to after being proven wrong).