Need to save Phal-- help please

A baby Schilleriana arrived 3 days ago from an eBay purchase that had one sad leaf. It looked dehydrated, soft and thin. It fell off yesterday. Roots still look good. It came on a piece of wood with sphagnum moss.

How do I save it? Thank you so much.

 

States seller, 14 day return. However, by the time I rebox it and pay for the shipping, it will eat up enough of the money spent, it may not be worth the hassle involved. Yes, I communicated with him the condition of the orchid and no reply. This morning I decided to put it in a "hospital", and once the original sphagnum moss was taken off, it was obvious the crown was black. Bad seller and now smarter buyer.

 

KellyW, you must have sent good vibes to the seller. I just received a message from him that he would ship me replacement.

I still want to try to save the first one. Any suggestions? I have it in moist sphagnum moss in a terrarium condition with ventilation.

Thanks.

 

Thanks!