Hmm what would be interesting is if all the inactive player accounts were being ported over. Nov 1 is when they start active accounts, but think of 500k+ inactive accounts they need to transfer over. I would imagine it would take a bit of time to do those accounts and now that they can't resub it would only make sense to start the transfer. So they could have done a save state on the servers or something to cause the lag to start the transfer.

This is all a theory, nothing more.