Also just checked in my error_log to see these Joost:
[14-Jan-2013 16:11:18 UTC] PHP Parse error: syntax error, unexpected $end in /home/mysite/public_html/wp-content/plugins/wordpress-seo/inc/wpseo-functions.php on line 149
I think I may have been restoring a backup at the time though, so it may not be relevant.
Would love to get that cron job back working though!