Traitorous?
Many {Like myself} would like to take part because we want not by force...Many of the States joined the Federal Compact and made it clear that they reserved the right to leave! During the debates{in Madison's writings} He made it clear that if either party violates the Constitution it becomes VOID and of no force... Whom formed whom? We, the delegates of the people of Virginia . . . Do, in the name and behalf of the people of Virginia, declare and make known that the powers granted under the Constitution being derived from the people of the United States may be resumed by them whensoever the same shall be perverted to their injury or oppression, and that every power not granted thereby remains with them at their will . . .
Fair enough, although you're still stuck with that whole problem of who decides when the Constitution is violated. If it's left up to each party to decide for itself then the contract, like any other, becomes an at-will and unenforceable agreement, in which case there is no real contract at all. Much like today's status for marriage.
You will have to point out to me the violation of the Constitution that justified SC's Declaration of Secession. As I seem to recall, the issues they cited were pretty much all prospective. IOW, they seceded because they thought the Union might do something in future that would violate the Constitution.
Surely you don't claim pre-emptive secession was justified?