How to do a Lion Server Open Directory Restore?

Lion Server on a Mac Mini was having issues when being rebooted. We've pulled the plug a few times in the past to bring it back up, An update was done last night to 10.7.5, then it hung on restart. Once it was hard reset, it hung on start, went into Safe Mode and everything came up, rebooted normally and Open Direcorty services won't start and all users are missing.

Never did a manual archive of OD with Server Admin, but have Time Machine backups going back a few weeks.

Is there anyway to just restore Open Directory? Can I use Server Admin to point to a TM backup and pull a file there? If so, what type of file am I looking for?