Complex sentence: He has just quit his job with a large multi-national company, and has returned home for what he intends to be a flying visit: disillusioned, but a lot richer, but his father has a car crash brought on by a dizzy spell.
Split into simpler sentences: He has just quit his job with a large multi-national company, and has returned home for what he intends to be a flying visit: disillusioned, but a lot richer. But while he is there, his father has a car crash brought on by a dizzy spell.