The Constitution isn't as cut and dry as people would like to think. Sure the federal government only gets enumerated powers, but in a seemingly contradictory statement Congress also has the power to pass any law that is "necessary and proper". Therefore federal drug laws, etc. are all legal.
The article is throwing loaded words like "civil war" into a debate that has been going on for over 2 hundred years. Sure the state government vs. federal government was what spawned the Civil War, but really...why would THIS attempt start a civil war.
EDIT: Nice comments from people that read that blog...sensationalism, pure and simple. When I hear from a reputable news source that New Hampshire has seceded, I'll worry.