Kinda like swimming across the Mississippi River, C. Once you get halfway, too late to change your mind; one bank is just as far as the other.
States don't need to seccede; they just need to do what Obama does, and IGNORE Law that he don't agree with. Like not even offering a budget; or defending the border and enforcing immigration law.
If enough of a State's citizenry agreed to the temporary transitional 'discomfort'
, they'd make it through to the other end. Regardless...there'll be discomfort either way; just a matter of whether power is local...or comes from way off.