Complex sentence: The pool is regularly used, uninvited, by the neighboring Aqua Teens, providing a primary source of irritation to Carl-though he occasionally tolerates the intrusions in spite of their usually-disastrous outcomes, perhaps out of loneliness.
Split into simpler sentences: The pool is regularly used, uninvited, by the neighboring Aqua Teens, providing a primary source of irritation to Carl. Though he occasionally tolerates these intrusions in spite of their usually-disastrous outcomes, as well, perhaps out of loneliness.