yes you are getting multiple transforms. Whenever you extract a face maya creates a group with the extracted face and the original object and those bits have their own history so when you try to rotate (or transform them in any way) you get multiple translations.
After extracting you will want to delete history on the objects. You may want to ungroup them, delete history, and freeze transforms.
"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675