My outside humidor was up to about 70%.
I stuck the whole thing in the fridge, propped open the lid, and dried it out in a few days.
It's settled right in at 64%.
The RH in the fridge is about 40%.
When I took it out, I immediately closed it so there would be no condensation on the sticks. The outside was cold also, and I just wiped the water off of her as she warmed up from the outside in.
If the humi doesn't seal, and it sounds as if it doesn't at all, you can fix it using some foam and a clasp. Either that, or throw it away and use a rubbermaid container.