Figured out what happened and a way to get root. This may help others.
When I reverted from OTA-VC to V9 the VC partition and VC recovery survived as everyone said it would. Following the directions to reinstall V9 recovery and partition kept returning error messages, but finally appeared to take. That was an incorrect assumption.
My solution:
Reverted to V9 again; Installed z4root but did not run; installed LG Optimus S Control Center 1.1.001 on my computer and ran it with settings - software version-LS670ZV9, rooting status-not rooted, Recovery Kernel-stock V9 recovery.
Told it to root phone (it doesn't but bare with me). Once that finished, I ran z4root to get root and SuperUser.
Told it to Install stock LG recovery, allowed every time SU asked permission. Closed and Uninstalled Control center
Rebooted phone.
Installed LS670ZVC update with LGMobile update.
Re-installed control center with settings - software version-LS670ZVC, rooting status-not rooted, Recovery Kernel-stock V9 recovery.
Went to settings tab and selected "Force Root". Went back to advanced tab and clicked "Root Device" button and followed directions.
rebooted phone - had root. Ran several root access programs (ad free, root explorer, cachemate) to verify I did indeed have root.
Installed cutom recovery.
Did happy dance. JK.
Thanks go to everyone who did the HEAVY lifting. I just came up with this rather round about method. But it worked for me and hopefully it will help others.