It's the last quote that intrigues me...

Quote Originally Posted by Marilyn Manson
Absolutely. We’re playing a show with them, its two nights in a row. We’ve been speaking about things, I don’t know what will happen, I would love to. He taught me how to do a lot of things.
He's obviously referencing the Aftershock festival. I wonder if they have something planned? I think that would be better than a Q&A or a secret show at this point.
To get to experience MM and TR together sharing the same stage would be amazing.

That would explain why NIN.com says "Manson the next night!" Maybe TR might make an appearance during Manson's set? Or maybe Manson will come in for the encore for Nails' set and do a song. Anything is possible!