Well, I don't see him going back into the egg.
Get an 8 oz deli cup or similar sized clean plastic food container with a lid, fold up a a paper towel and put it in the bottom, dampen the paper towel slightly, and put the little guy in that along with any egg yolk that's left, assuming the yolk is not hard. Poke some air holes into the lid and put that on top so he doesn't climb out, and leave him there until his yolk is absorbed.