How can I remove 300 groups from my iCloud Contacts?

Question

My OS X Address Book started out with about 10 groups, but now iCloud.com has about 300 groups.
The replication arose because of a bug in how iCloud handles a mixture of Address Book Cards with both OS X and Windows line terminated Notes (LF vs. CRLF - it helps if you once used a typewriter).
I figured out how to convert Address Book to all LF terminated line feeds and I was able to get iCloud.com working on a different account, but my core account is stuck with 300 groups (some replicated 50 times).
I know how to delete all Cards/Contacts in iCloud.com Contacts, but, unfortunately that doesn't remove Groups. (Groups have an interesting behavior in iCloud, almost as though Apple has a special plan for them.)
I can delete Groups one at a time on iCloud.com, but that's tedious. Unfortunately deleting them on Address Book, and trusting in sync to clear up iCloud.com, is equally tedious.
Has anyone heard of a way to delete all Groups on iCloud or Address Book 6? Perhaps an AppleScript?
Has anyone heard of Apple resetting a corrupt iCloud account to clear out bad data? (I have a clean version of Address Book I can use to restart -- that, by the way, is harder than you'd think. Again because Groups are special).
Advice appreciated. If I get some free time I might take may laptop by the Genius bar and see what they say...

Answer 1

I figured this out. In this case I didn't care about my Contacts, I had them elsewhere. My problem was my iCloud acount was "poisoned" with massive replication of 'Groups'. Even after I deleted all the Contacts I still had hundreds of Groups to get rid of. Manual deletion was too tedious.
The answer was a simple AppleScript (I'm on ML on the machine i ran this on, so it's "contacts" rather than Address Book:
tell application "Contacts"
          repeat 50 times
                    set theGroup to group "MyGroupName"
  delete theGroup
          end repeat
save
end tell
Since I had the same Group Names replicated about 100 times each, I only had to run this about 10 times to clear them all out. When I got to smaller numbers I had to drop the repeat count. I changed the Group name as I went.
Took me about five minutes.
I'm sure an AppleScripter could turn this into a general script for removing all groups all at once. Or could get very clever, and only remove groups that had no contacts (so one could salvage the group/contact relationships).
I didn't need that. My problem has been fixed.
I think sync works a LOT better in ML than Lion btw. iCloud updated very quickly.