One additional problem arises in the advent of a "revolution".
The Civil War was viewed as two different events. The South believed they were seceding from a voluntary entry into the United States. Abraham Lincoln believed, and proceeded with what he believed was an armed insurrection. This allowed him (again, in his belief), that habeas corpus could be suspended, and that he was allowed super-constitutional powers.
Lincoln was supported for the most part, by Northerners who believed in the preservation of the union.
This isn't to state that a successful secession couldn't succeed. It, however, seems unlikely.