No poster has any idea if TJ is a good X & O's coach because we haven't seen him in action... CFH and Pollard have watched him in practices and talked with him on strategy so they would have a decent idea of the type of plays he would have created and they seem to be sold on him there.
I would agree with the general idea that TJ would stay on staff this year to help the transition of the roster to an outside head coach though that would be left up to the new guys prerogative.
After TJ's one year deal is up I am not so sure he stays, and that is a major concern considering the 6-7 open scholarships in 2016. We may have to go through another Matt A. lead recruiter leaving scenario next spring if TJ isn't comfortable under Prohm, Underwood or Drew. I don't want to have TJ build recruiting relationships for a year and leave for a Mid-Major job leading to de-commits and targets dropping ISU from their list next spring again.
Not the reason for Pollard to hire Otz but it has to be a factor to consider.