Complex sentence: They attempt a drop from atmosphere only for Killer Croc to start vomiting into his helmet, and in the rescue from drowning in his own vomit the drop pod destabilizes and breaks apart.
Split into simpler sentences: They attempt a drop from atmosphere only for Killer Croc to start vomiting into his helmet. During attempts to prevent Killer Croc from drowning in his own vomit, the drop pod destabilizes and breaks apart.