Exactly. But you can lose big in court as well. Ultimately what the court says is irrelevant if the people wanting to secede are to have any self-determination. This issue is about whether a state even wants to recognize the authority of a federal court. Asking a federal court to make that decision is absurd.
But throwing down the gauntlet on this is stupid. It is an emotional outburst that is more likely to doom your cause than bring it to realization.
Sic Semper Tyrranus. One might also want to re-read John Locke’s Second Treatise of Government, in which he asserts the right of the people to rebel.
Self determination must also consider the rights of those who do not want to secede, as well as those who want to secede.
Self determination permits people to leave the country if the laws and customs do not suit, and they have no majority to bend the laws and customs using legal means. It does not permit a minority to destroy the Union.
Unless you think, like Calhoun, that your minority is more important than my majority. In which case, your minority will tend to be perpetually unhappy. Better to leave the country, and seek one where you will find people more accepting of your mental illness.