You may opt-out of the Account Updater program at any time. To do so, log into https://id.spreedly.com, go into your Organization Settings, click "Edit Settings", turn the toggle off, and click "Save". This will remove you from the Account Updater program.
Note that all changes to your Account Updater enrollment status must be made before 12PM EST the day before cards are updated by Spreedly. If you opt-out of Account Updater after this time, your cards will still be updated in the next round of processing, and you will still be charged for each updated card.