Unfortunately, things went downhill fast. When I started to poke around the boot RAID, I found it had come apart again (even after replacing a failing drive about a month ago). I guess I had used up my 9 lives, because the rebuild failed and I have a paperweight now.
I'm heading out on vacation, but will be spending my Thanksgiving Day rebuilding the server and getting as much data from the postgresql databases or back ups as I can. All the regular user data is on another volume so that is safe, although mapping uids will probably be a pain. I think my OD backup may be fresh enough if I can get it out of Time Machine.
I was thinking about Profile Manager before I saw your post, and was thinking I should make that the central point of my system administration for users/groups/devices. I need to search for a primer. I really wasn't using Workgroup Manager much, mostly would bring it up because Server doesn't really provide much useful info.
I may even go ahead and leap to Mavericks/Server 3 since I'm not sure I have anything to lose at this juncture.
Sigh...I'm really losing my patience with OS X/Server. Although I've had this particular set up running for a little over a years, it has not been without issues. This may be the last round before I abandoned it altogether.