You can select any Output bus, but unfortunately no Group output. You could create a second stereo output bus without Sonarworks and gain change applied to it, and use that as the bus to export video. Don’t forget to route your audiotracks to that specific output as well.
But another thing: Why would you apply Sonarworks and gain change to your stereo output bus? Why not use the control room and insert the Sonarworks plugin there? It would be unwise to insert any form of processing used for control room correction on your Main bus. That’s what the control room setup is meant for.