Well, at this point they have everything as far as I'm concerned, as they have ownership of the domain and the WHOIS details of said domain are assigned to them

Well, at this point they have everything as far as I'm concerned, as they have ownership of the domain and the WHOIS details of said domain are assigned to them, and they also have all my source-code and assets and FTP access to the site. Where as, at this point, I still have nothing and am waiting on Escrow to approve that the transaction has been completed. If you see my point? Which makes me worried that it might be possible at this point for the buyer to refute the transaction, Escrow to then cancel the payment and I'm now stuck without a domain or at worst, I get the domain back but someone else has a) my source code and b) the ability to do anything they wish during their access to the FTP until it's removed. I probably just don't understand Escrow and how it works.