CCR2004 and AT&T bgw320-500 router

CCR2004 and AT&T bgw320-500 router

Has anyone made this configuration work where the supplicant method is used as is detailed here?

http://forum.mikrotik.com/t/bypassing-at-t-residential-gateways-with-mikrotik/135563/1

How does one go about getting the certificates off of the ATT router?