Suits with big wallets. Thats what it comes down to. Its sad that they would hunt you down because they were not able to buy your domain. imo thats what it comes down to it.

In your terms they are claiming copyright to the "s" which if they do processed it could come down to them having to give up there domain. the iCANN records should show the transfer info from a seller to SOWS which will prove that they have copyrighted you? maybe. What ever happens hold your head high you had the domain first dont let them bully you out of it.

I wish you the best.