To make it so a vid is not offered as part of your Membership, go to the edit details of the vid you want to exclude from your Membership either by hitting the blue "Edit" button under the vid on your profile or by going to your drop-down menu > Manage My Store > Content Manager, locating the vid and hitting the 3-dots to the right of it and hitting "Edit".
Go to the section titled "Your Membership" and click the box labeled "This vid is not included in your membership" and then hit <Save>. This vid will no longer be accessible through your Membership.
You can also edit what vids are included, excluded, and exclusive to your Membership by clicking Dashboard> Quick Links> Membership and clicking "Click here to customize your Membership."
Members will be able to identify which vids are not part of your Membership by the white asterisk (star) in the top left of your vid thumbnail and preview.