Complex sentence: Fearing retribution should the Littles discover Snowbell's deception, Smokey orders the Stouts to hand Stuart over to them, but the Stouts, having grown fond of Stuart, tell him to flee.
Split into simpler sentences: Fearing retribution should the Littles discover Snowbell's deception, Smokey orders the Stouts to hand Stuart over to them. However, the Stouts, having grown fond of Stuart, tell him the truth and instruct him to flee.