They didn't/don't look that bad to me. I have seen much worse hatch under a broody hen - and she pooped on them.. twice... broody poop! I didn't touch them and they were fine. You don't even want to see what ducks incubate and hatch - ewwwww. Just do NOT wash the eggs! That is a sure way to drive the bacteria into the egg and kill it. I think you knew that because you only scraped off the stuck on stuff - so they should be fine.