I'd be happy to, that article was pure speculation and I wasn't at all impressed with it.
Best take up your grievance with the following also ..
http://www.africaresource.com/rasta...nal-meaning-of-the-n-word-by-pianke-nubiyang/
http://www.allempires.com/forum/forum_posts.asp?TID=28269
http://www.urbandictionary.com/define.php?term=ngr
http://kamaumau.hubpages.com/hub/NGR-True-History-of-a-Banned-Word
http://blackhistory.tribe.net/thread/a94531d2-1077-42e4-9261-b6ce05bfe58d
http://www.assatashakur.org/forum/spirituality-connect-your-center/464-ngr-******.html
Let us know how you get on with putting these guys straight, please?
Just as a 'btw'. It is entirely possible that this word origin is speculative. It appears to be an immensely popular speculation amongst persons of African descent though.
I like the idea because if it is correct then it is another tool in the box that can be used to show those who use the N-word spitefully up as being dumb.