You left the teleporter stone on the ground before going to the easter egg area? If you have been to the castle but have not rescued Zandalor yet, your teleporter stones may be disabled (if an imp doesn't steal them).
You can get out of the easter egg area by;
Teleporting Anywhere, via hex editorIf the teleporter stones are supose to work, but do not, you can stick the one you have in a chest and and download another set;
Lost Items - guide and directory of inventory filesThen
a way out, if you're Stuck in the Easter Egg AreaThe elf should be in the south west cell, IIRC, and there should be a guard by the stairs.