Option to undo the applied filters

Hi,

I'm using this wonderful module in my website to let users filter promotional products. What we feel most is the lack of a option to undo the applied filters. I think that a simple "Undo" in the block would made a great difference in the navigation, since that a big number of users come to my site via Google direct to a filtered page, like http://site.saks.com.br/taxonomy/term/120%2C131%2C179 (briefcase, scholar, four compartments) for example.

What do you think of that? Finaly, thanks for this great module!