Hey astroaxus, I'm glad you're enjoying the game so much and I'd be happy to help you out! And yes, it's possible to get into the sanctuary and solve the puzzle in there.
I don't want to spoil the solution in here, but you if you email me at support@gallagames.com we can help you out more.
Also, let us know when you release the video, we'd be happy to check it out! c: