... I can't think of an scenario where this would happen since anyone can send bitcoins to anyone anywhere in the world directly without going through a third party.
That was precisely the concern or lack of understanding on my part that prompted me to write the article. Others have said it's a non-issue (http://www.reddit.com/r/Bitcoin/comments/1itiz3/the_hidden_rule_that_could_kill_bitcoins/) because the technical solutions are trivial. My goal was to raise awareness of the issue, and also understand how the problem was going to be solved technically. I now understand. Thanks, odolvlobo!