How can I make the fancyhdr footer to be longer than \textwidth?

I'm using XeLaTeX with fancyhdr. I need to have the footer wider than \textwidth. This is an intentional effect. The problem is that the footer is several lines long, so I want them to appear as a single paragraph, wider than \textwidth. I'm not sure how best to do that.

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Here's a simple way:

\usepackage{fancyhdr}
\pagestyle{fancy}
\usepackage{lipsum}
\cfoot{\hspace*{-.1\textwidth}\parbox{1.2\textwidth}{\lipsum[1]}}


It doesn't look great, and you'll probably have to increase how much space the footer is allowed to take up, but you get the picture...

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(Replace \lipsum[1] with the relevant text...) –  Seamus Aug 17 '11 at 14:53
fancyhdr had an offset option for this! –  Herbert Aug 17 '11 at 16:13