Give me a break. Under your line of reasoning, 'What if Martian parasites invaded the bodies of State officials, and allowed a Martian army to occupy the State's territory before the State formally ratified its act of secession? Is Article 1, Sec. 10 meaningless as long as the state says, "Oh, I was going to secede but just hadn't made it official yet, because the Martian parasites gave me a bad itch"'?
Go vote for Obama - it's more rational (even though it's completely irrational) than what you just posted...
Go look at the timeline of Virginia secession. Virginia joined the confederacy on April 23, 1861. The confederate legislature voted to move its capitol to Richmond on May 21. And finally, on May 23, Virginia ratified its act of secession. A month after joining the confederacy.
If you believe unilateral secession is somehow constitutional, you must also admit then that Virginia violated the constitution by allowing "foreign troops" on it's soil before it had even had a vote on the secession question.
Even Rand thumping fundamentalist libertarians can't have it both ways, Mr. Gault.