I would take it off asap and root it like you would a clone. Most likely if it's properly snapped it will die otherwise.
bugmenot2 Reviewed by bugmenot2 on . Snapped Stem Yea, i did it accidentally, a probly 4 inch portion of the plant off the top. its a clear snap all you can see at the top is the stem and the hollow portion. As i have never done this before i ask, what becomes of it? Rating: 5