Wellman gave Dino a contract extension simply for recruiting purposes because we needed keep Dino's recruits and to keep recruiting momentum going.
But Wellman fired Dino because he had been recruiting players who didn't fit the culture and got into a lot of trouble including being accused of rape.
But Wellman's staff supposedly investigated the rape allegations and found there was nothing to them. The accuser went on the Today Show for a segment on how college athletic departments don't take rape allegations seriously.
Wellman hired a coach in [name redacted] in order to the culture necessary to move the program forward. Under [name redacted], there were "DWI's, multiple arrests, and campus thefts." And don't forget the "things that haven't even gone public" which somehow people don't realize means Wellman's staff was covering them up.