From this post, Re: Sharepoint rendering remembering previous filters, Russell shares some of his fantastic knowledge of the Tableau products.  We know about adding ?:refresh=yes onto the end of your URL to automatically refresh a workbook in the browser but did you know about these three (I didn't)?

• :revert=filters   //clear filter changes
• :revert=sorts      // wipe out sorting actions
• :revert=axes        // reset "pinned./zoomed" axes