If you mean 'does it use a known MVC framework, or 'does it use an active-record-type pattern and a true MVC distinction between model, view and controller' then the answer is no.
However, it collects the database queries in a single module, routes requests to scripts through a Rails-like page routing system, and has a theme-based system that collects essentially all the logic for display in one PHP class. Which makes the answer a qualified 'yes'.