But in that case it's typically people who have already graduated/are on track to in a normal four years. They're applying for a graduate program.
Here, Ishaq won't have graduated and will basically be finishing up whatever coursework remains for his bachelors. Probably not much (IIRC he was an EE, and with that plus summers I'd bet he was on track to graduate this semester - unless of course the cheating bit was that important to him).
Anyway, I'm sure he'd need to be re-admitted in some form. But I think the standard fifth-year rules might not apply here. Also, has anyone ever actually not gotten the fifth year?