If you candle it, and see it's beak, you should see it panting. If it's alive and panting, you can carefully poke a hole at the air sack and remove enough shell and membrane to allow air inside, then put it back in the incubator , making sure you continue to keep the humidity up high. That way, the bird can take it's time and not run out of air, and the humidity should keep it from shrink wrapping.