To lose a 20 point lead to the team that has owned you for over a decade certainly doesn't help the morale in the locker room. The players have lost trust and Johnson looks like a defeated man now on the sidelines.
I would venture to guess that PJ is much softer than we think. His public persona is one thing but his teams don't see to play with an edge or a nastiness. Could you EVER forsee George O'Leary bringing a freaking ice cream truck onto the practice field during camp? Further illustrates that potentially he is softer on the guys than he appears.
I think like other people have said depends on what you want out of the football program, GOL would have probably been more successful at tech than PJ if he stayed longer but did he do everything the right way? Or care that much about academics? Prob not. So you are sacrificing academic integrity fit athletics which people will fight about forever.
I think what we need is someone like brian Gregory who is likable/good recruiter but a better x and o guy than Gregory, or at least has a good offensive coord.
Grass always looks greener on the other side.