I do read several right wing blogs. To my knowledge, none of them have made such a claim. It was my impression, and one which @Quipling has helped to dispel. It may not seem extraordinary to you that a person could serve out the sentence they received and then be required to serve longer at a later date for the same conviction, but it does to me. I trust quipling's explanation that this is not in fact far out of the ordinary. Persuasion happens, even on Sherdog.