First of all, If I were living in Virginia and a Torey, I'd ask President Washington if I would be safe or have safe passage to another country. I probably want to know if I could take my slaves with me. If I were a Virginia Patriot and owned slaves, I probably would not have written Washington and gone on with what I was doing before The Revolution.
The slave issue really didn't come up again until Congress wanted to admit Missouri as a state (circa 1830) which was settled with the Missouri Compromise.