dying orchid rescue! (Angcm. didieri)

[Bobblybook]

Hi everyone,

I've just been given this from a friend who thinks it's just about gone.

I've done some googling and I'm pretty excited for this little guy, though I've never tried rescuing an orchid like this so I might need some help from the experts

It has just those two root stubs, though they're both alive & firm and turned green after a soak (see photo).

It had 2 leaves, one yellow & soft which fell off. There's a leaf tip growing thankfully, and it still seems quite healthy.

I think the biggest issue may have been temperature. I just don't know what to do to keep it alive, since there isn't much of anything to work with.

Currently I've placed it in my terrarium, just sitting on a log for the warmth/humidity.
I have some cork coming later this week, and was wondering whether it would be fine mounted to some cork in my terrarium. It's very humid in there (80+%), and I was thinking about mounting it bare without moss to allow the roots to dry properly.

I'm also hesitant to fertilise it yet due to it's limited roots... would a diluted spray be beneficial at all?

Sorry about the lighting - it's night and hard to get a good quality photo.

If anyone has any advice, please share it!!

EDIT: It seems I can't link photos from a website.. attached instead.