Lead Gingus back to the crashsite and to Elly Nerwick. He moves slow (after all, he almost died!) and will stop moving if you get too far from him.
NOTE: There is no need to attack anything; you can use invisibility all the way back. Nothing attacks him; just you. If you cannot use invisibility spells or totems, don't use any AOE, as this will cause Gingus to aggro.