You have to spray the mold lightly with Pam first and when you are ready to open them do it slowly. Kind of like a jello mold ,you have to see them release before you pull the top half completely off. You may even need to run your finger between the egg and the container to help release it.
This happened on my first batch too. I used Mazola spray to grease the cup part. The next time I sprayed the entire mold being especially careful to spray alot on the parts where the mold joins together. They came out great and so far I have 4 different flavors done. good luck!
Sorry to reintroduce this topic but I tried using the jello moulds and they leaked dreadfully...how do you get the moulds to not leak so I can get egg shapes?? I so want this to work so I don't have to use regular eggs and risk getting salmonella!