Lisa and I have been talking about this quite a bit, and during our trip to Carson City on Saturday came to the conclusion that as long as we did the show in the evening and not on the night of the Hugo Awards, we could probably pull it off. That's because we expect to need many hours post-Business Meeting for me to do post-meeting meetings and to get the BM videos online as soon as possible -- and ASAP here is likely to still mean hours, not minutes, due to the needs of post-production and the sheer amount of time it takes to get a series of 45-minute videos uploaded. (If you've never done this, you aren't likely to understand the amount of time you spend waiting for things to happen.)
So I went back to Spokane's Programming head, and after some back-and-forth discussion it looks like we should be able to do a show on Thursday night (the second night of the convention) from 8 PM to about 10 PM. That's about as late as I'd want to run because we need to be up earlier than most people for the WSFS meeting.
I thank those of you who sent messages saying they were disappointed that they wouldn't get to see our show in Spokane. That was a contributing factor toward our seeing if there was any way we could make it work while still living up to our primary commitments to WSFS.