Main text of my Word doc became a toggle field code

VRisdonne 

Press Alt+F9 to display all field codes in the document. Does the text you want appear in the code of a field? If it does, carefully select just that text, avoiding the field brackets at the beginning and end (and the field's keyword, if there is one at the beginning). Copy that and paste it outside the field. When you're confident that the copy was successful, delete the remaining bits of the field.

Ordinarily, it would be recommended to paste to a new blank document based on the same template as the original document, but that risks losing the footnotes and headers/footers from the original.