Im sure this has been talked about before in some capacity but Im not even really sure what term to use for searching....

My husband put a cabinet together for me and glued little wooden pegs into one side of the door. ( wooden side that helps hold the glass in place ) He messed one door up and glued the piece of wood on upside down so now I can't hang the door. Is there a way to loosen or remove the little wooden peg without destroying the door? Im not worried about the finish or anything. Thanks!