This is mainly a user community forum. I'm not familiar with that process so I don't have any understanding of what you actually did, or if there's any way to "unshare" it.
You'll have to see if someone else posts in this thread today. I'll leave a note for other SuperUsers and the Moderator to see if they know what you are referring to.
You could phone TurboTax later today, but I'm not sure what they can do for you, or if they will understand what you did. But perhaps you can explain it more in a live realtime conversation. In any case, if you are using Free Edition, it may not let you phone. Here's how to try. You'll have to wait until business hours, 5AM-5PM Pacific (8AM-8PM Eastern.)
FAQ: How do I contact TurboTax?
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