Yes, you could make a controller that you then add to the page template.
From within the controller you can use for example
orgtitle = SiteMapBase.GetActualCurrentNode().Title;
to acccess the original title.
I made you a small screencast to illustrate this: http://screencast.com/t/3nJrgLG1ow
A similar approach has been suggested here for the standard page templates (non-MVC): http://www.sitefinity.com/developer-network/knowledge-base/details/dynamically-add-facebook-opengraph-meta-tags-to-page-head
It is again a custom control added to the page or the page control.
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