Just a note.... I didn't actually read the article.
I'm curious as to who out there does think Sunday is the Sabbath?
I've always regarded Saturday as the Sabbath, however I go to church and worship on Sunday because Sunday is the Lord's Day, a day of celebrating the resurrection. This tradition of worshipping on the first day of the week is seem many times throughout Acts, which is a guideline for how the new testament church should be conducting itself.
Why would we want to remain under the law of the Sabbath, when we can celebrate the resurrection of our Lord every week on Sunday?