Sorry Charlie, but six states had already seceded before Lincoln was even sworn in. Here are they violations of the Constitution by the secessionist states:
Article I. Section. 10. Clause 1:
No State shall enter into any Treaty, Alliance, or Confederation;
Article I. Section. 10. Clause 3:
No State shall, without the Consent of Congress ... enter into any Agreement or Compact with another State ... or engage in War
Article III. Section. 3. Clause 1:
Treason against the United States, shall consist only in levying War against them, or in adhering to their Enemies, giving them Aid and Comfort.
Article VI. Clause 3:
The Senators and Representatives before mentioned, and the Members of the several State Legislatures, and all executive and judicial Officers, both of the United States and of the several States, shall be bound by Oath or Affirmation, to support this Constitution;
Clearly the state governments faild to support the US Constitution. They engaged in treason by making war against the US. They entered into an agreement/compact with other states and made war. They entered into a confederation.
Do you neo-Confederates really have that much trouble reading the plain language of the Constitution -- or are you all really Lysander Spooner anarchists?
A state that is no longer in the union and no longer operating under that constitution is not bound by it. Try again.