This is a little deeper than "Campbell helped with the roster." A few things happened and I'm not perfectly sure in which order but I don't think it went as planned
-Initially there was cooperation, everyone understood Campbell was taking some guys
-Campbell took more guys than initially intimated
-Rogers didn't want A LOT more guys than the old staff thought he should have
-Some old staff guys were very mad JR wasn't just trying to keep everyone
-Essentially Campbell thought he could still control the roster and JR wasn't up for that
-I believe Campbell gave some guys spots at PSU that he didn't intend because JR didn't want to keep them
-It was made very clear this is not MCU and right or wrong, that was a reality I don't think MC had foreseen
None of this, IMO, is egregious on anyone's part. It is just how all of this goes in the game right now. I think the rub was when Matt Campbell came to the realization that the next guy was coming in with a fresh perspective and it was his program now. Both positions are completely defensible, I had some questions about Rogers cutting guys loose but with the destinations of a lot of them, it's also hard to disagree with that at this point.