Complex sentence: The Icarus I and II airlocks then inexplicably decouple, damaging the Icarus I airlock and stranding the four crew members on the derelict spacecraft; staying behind, Searle jettisons the other three using the vacuuming of the airlock to propel them into the Icarus II airlock.
Split into simpler sentences: The Icarus I and II airlocks then inexplicably decouple, damaging the Icarus I airlock and stranding the four crew members on the derelict spacecraft. Staying behind, Searle jettisons the other three using the vacuuming of the airlock to propel them into the Icarus II airlock.