Assuming you have read this tweet from lemiorhan talking about how to get the root bypass.
After doing the above you are set with a root account with no password. If your remote access settings allow for "All Users" then root can access with no password.
If you enter a new a password on the account and disable it, you can bypass all of that by starting the entire workflow over. Click the lock and enter root and leave the password blank. It will overwrite what you originally had set.