You can take them out. Have a box ready and work methodically.
- Be careful reseating your incubator's lid. If there's a turning arm, it could break an egg if it hits one.
- Make sure the lid is on properly. Those plastic ones can trick you.
I open my incubator whenever I feel the need and I've never had a shrink-wrapped chick. (Though I'll be surprised if I never do have; it happens.) The books scare the heck out of you, I know, but those appear to be "cautionary tales"ā"putting a fence around the law" sort of things to keep you from getting within a hundred miles of the danger.
I've seen pics here of people letting the an egg hatch in the palm of their hand. Don't get too cavalier unless you're willing to take the risk, but don't allow the fear-sellers to keep you from doing what's needed. Remember, chickens hatch eggs all the time. It's not as touchy as some would lead you to believe.