[antiRepublicrat]

Except that in 37 out of 50 cases the state didn't form anything. They were admitted to the Union, and only with the consent of the existing states. Why shouldn't leaving require the same thing at a minimum?

You join an exclusive country club with the consent of the existing members. Do you need their permission to quit? Of course not.

[Non-Sequitur]

You join an exclusive country club with the consent of the existing members. Do you need their permission to quit? Of course not.

It would depend on what the agreement said. Regardless, try and leave while owing money and with all the club property you can get your hands on and see how they react.