Help! Holc wangii dying!

[crazymonkie]

Hey everyone! As the title says, I've got a Holc wangii seedling that is doing terrible. It's got two little healthy roots and two that have "bald" spots that look to be gradually inviting rot. Additionally, it's been dropping leaves like crazy. Three weeks ago, it had five leaves. For the past few days, it was down to two... I'd moved it inside, thinking maybe that it was an infestation of thrips (I'd been having trouble with them with some other orchids, though that's been clearing up). I'd been spraying the plant every day with Neem oil/liquid soap solution, which seemed to be working, but now.... the leaves are gone, and I'm not sure what to do.

I've never had one of these, and I've also never had leaves drop like that before. I had a brief scare with a full-sized Cym, but that turned out to be due to some tree litter getting in between the leaves above the pseudobulbs. This, though... this has me really worried.

What should I do here? Right now, it's sitting (the leaves are well-watered still) in a little glass bowl with nothing in it. Should I sphag and bag? Leave it in the bowl? Suspend it in the bowl? Wrap it onto a little mount? Keep it out of direct sun? Put it in direct sun? Use rooting hormone? Whaaaat?!? Help, please!