Complex sentence: Hogue violated the conditions of his parole by returning to Princeton and hanging around the campus using the name Jim MacAuthor; he had not officially enrolled, but had attended social functions and eaten in the cafeteria.
Split into simpler sentences: Hogue violated the conditions of his parole by returning to Princeton and hanging around the campus using the name Jim MacAuthor. He had not officially enrolled but had attended social functions and eaten in the cafeteria.