I finally decided that I may as well swap everything over and start working on the right wing instead of just twiddling my thumbs waiting for the weather to be warm enough to finish sealing the left tank. I pulled the left wing off of the stand and put it onto the wing cradle I built a while back. The cradle is actually for the finished wings, so it doesn't exactly fit a partially finished structure with no leading edge, but it'll work for temporary storage. I just attached a few blocks on it to keep the spar in place.
And just like that, it's time to start all over again. I deburred the edges of the rear spar and all of the doublers.