Drive it over to the Tri-Cities and leave it in a storage yard with all the vents cracked along with a window or two. The 20% humidity there will dry it out in no time. Four hour trip over, so 9-10 hours all together and you'll be back home. Assuming you arrange for a site at a storage place first.
I'm not there and didn't see this all go down, but if it's a real worry, you could drill holes at the lowest point down from that interior wall to help drain and dry it. Might take some work figuring out where to drill though. Than patch the holes with Eternabond tape.
