I work at a college and interact with students every single day. Some of them - some of the best, some of the brightest, even some of the hardest workers - fall below the 2.0 mark despite all reason. Work, family, relationships, classes, whatever; it all adds up to a point they can't fully invest themselves in a single aspect of their lives. Just because Tiller is academically ineligible doesn't mean he is lazy or a thug or anything else. Keep in mind that student-athletes have the burden of two-a-days in addition to the academics every other college student deals with.
Ya I work for ISU and only hire ISU students and all of them have these issues but some how they manage to keep there grades up. They are not atheletes usually but I have had them as well and they seem to manage just fine. We have had numerous Fb players and womens bball work for us and they have managed just fine.