Eventually, we're going to have to admit that we don't want people watching it not because it's "sacred", but because it's "embarrassing". No LDS is watching that video and thinking "Oh, how sad, now non-LDS are going to see the sacred Temple ceremonies when they're not worthy."
No, LDS are watching that video and thinking "OH MY GOSH! Now all my non-LDS friends and family are going to know what I'm doing in the Temple and how weird it is!"