for those of you still having problems making snazzy archives the full width of your page:
1) make sure your theme is not limiting the CSS "overflow" of the theme container divs.
2) edit this file of the plugin: snazzy-archives.js
line 20:
visible:4, // number of visible elements
change to this
visible:8, // number of visible elements
that worked for me:
http://www.helloari.com/archives/
