Don't worry. Eggs are a lot more durable than most tend to think. Just make sure the humidity is high and the eggs are not sitting in water and you should be fine.

I've rotated eggs, moved them, turned them completely upside down weekly, had eggs roll, with no problems.

Here is a thread from a while back with some more information as well.
http://ball-pythons.net/forums/showt...Egg-Experiment