Let's remember the allegations and the scope of the investigation. The investigation extends all the way to Pahokee and Miami. If these girls were members of UT's official hostess organization, it isn't likely that they went on their own dime.
Institutional control comes into play because this would involve lack of control or oversight by the university. There do not have to necessarily be any specific violations by the football coaching staff. If the suspicions raised by the article are true, and if university funds were expended, then it was organized and administered by an official university body that assists in the recruitment of football players. The hostess group no doubt has a faculty sponsor. If travel expenses were paid, someone had to authorize those expenses. Not only is the faculty sponsor accountable, the person they report to, all is also accountable as far as the NCAA is concerned. Since it involves the recruitment of athletes, the AD is certainly accountable, and maybe even more than Kiffin.
I wouldn't travel 200 miles to see my HS alma mater play football. I don't understand why so many people seem to think that it's not unusual for college girls to drive 200 miles, at their own expense, to see a high school football game involving high schools that they did not attend. For those of you who think this isn't unusual, have you or any of your buddies ever done that?