Complex sentence: Calvin realises how much mess he has got into he packs his bags but then wife Carmel walks in the houses and asks what's going on, he just replies saying that she doesn't know how he really is and what he has got into.
Split into simpler sentences: Calvin realises how much mess he has got into; he packs his bags but then wife Carmel walks in the house and asks what's going on. He just replies saying that she doesn't know how he really is and what he has got into.