Complex sentence: He settles the business by assassinating the businessman along with a hefty number of henchmen and heads back to Russia with Marylin while his brother remains in America, and heads to prison happily, stating that he is finally home.
Split into simpler sentences: He settles the business by assassinating the businessman along with a hefty number of henchmen and heads back to Russia with Marylin. His brother remains in America, and heads to prison happily, stating that he is finally home.