Take a look at the bottom of
It seems, that 'ossnfetchextend_views()' is the counterpart of 'ossnextendview()'
Kind of a hook to insert additional stuff.... And since this is the bottom most hook we can find, simply change your PIWIK inserting point like ossnextendview('ossn/page/footer', 'stats/pages/stats');
Yeah, I'm convinced we would have a lot more modules if we had some documentation we could refer to. Right now, programming often feels like just guessing... :)