They can be seperated with a very slow and steady hand and some fine dental floss right after they the snake lays them but if it does not come apart easily I wouldnt even try it. My 2 infertile eggs are still in the bator. The one that is attached to another fertile egg is completely yellow with no spot at all inside it. The other had a very small red spot and 1 or 2 tiny veins but was still completely yellow inside. I left that one in case it develops a small late baby.
The bad ones are more prone to developing mold. If you see any mold spots apply some althetes foot powder with a Qtip to prevent any mold from spreading to the good eggs. You can get little containers of this powder at walgreens or walmart.