Complex sentence: Leaving Simon in the cockpit, the bounty hunter starts his EVA back to his ship, but finds Mal outside, waiting in ambush, who shoves Early off into space, before welcoming River back aboard "Serenity".
Split into simpler sentences: Leaving Simon in the cockpit, the bounty hunter starts his EVA back to his ship, but finds Mal outside, waiting in ambush. Mal shoves Early off into space, before welcoming River back aboard "Serenity".