Complex sentence: Within the auditorium, one patron, sitting on the aisle, is continually annoyed by other patrons wishing to pass him and sit in the same row; frustrated enough, he rips his mounted seat out of the ground & moves "into" the aisle.
Split into simpler sentences: Within the auditorium, one patron, sitting on the aisle, is continually annoyed by other patrons wishing to pass him and sit in the same row. Frustrated enough, he rips his mounted seat out of the ground and moves "into" the aisle.