Complex sentence: Jesse begs Walter to go to the police or the DEA, but Walt refuses; he reasons that Gus can't stop production, and with Gale out of the picture, Gus would have no choice but to keep him.
Split into simpler sentences: Jesse begs Walter to go to the police or the DEA, but Walt refuses. He reasons that Gus can't stop production, and with Gale out of the picture, Gus would have no choice but to keep him.