Perhaps not surprising that your search didn't turn it up, as I don't see the words "action" or "group" in the thread:
http://forums.omnigroup.com/showthread.php?t=16569
Glad you're back in business! I feel partially responsible that this one escaped into the wild -- it turns out I came across it during the alpha test, at the very end, but didn't have an opportunity to write it up and submit it before they shipped :(