Should they really be able to see it? (I'm worried about someone wrecking a challenge inadvertantly, lol)

I think it's good to have them able to see it, much like a Redemption audience. But, just for sanity during chaos, I'd think it'd be helpful to give them strict marching orders not to post in the Arena at all, or they'll lose access to it for all of Refuge. I don't think it hurts any for them to be able to see it, but seeing Brenda post during the challenge today struck me as odd, too.

Is there a way to pull their access to the Tribal Discussion forums during that period too? To prevent them from running back and forth between tribes sharing info only for it to get caught too late (seeing as how tribes probably wouldn't have their PMs disabled during it).

I turned off their permissions for refugees