So I ended up getting some moss, soaked and wrung out, then added to his warm side hide. I surrounded him well. I also placed a layer in the center around the water bowl, under the lamp. Humidity went up from 48% to 56% so far, in good time. Temps are holding well. he finally came out after that and is exploring right now.

I'd post a pic, but apparently I can't post attachments. Don't have that permission. Not sure how to turn that on.