I would not recommend rolling back..win 2003 sp2 will be supported in about 1 week - also there will be hotfixes for the mmc no tools issue for v6sp4 and for v7sp1 shortly thereafter too.
As a work around in the meantime you can install the EV admin console only on a workstation or other pc that does not have win 2003 sp2 - if you log on with an admin account you can do all the EV admin tasks from this machine :)