First of all, are there any hard pseudobulbs left? If not, the plant will not survive. If, on the other hand, there are any or even only one hard bulb, carefully remove ALL roots from the the bulb so all that remains is the bare bulb or BB (back bulb) for short. Also carefully remove any bracts (sheathing) on the outside of the BB. Then place upright in a zip type plastic bag with a handful of damp orchid mix covering 1/3 of the BB and close. Place in warm but not sunny area in the house and see if it sends out a growth. It may take 6 months but it will be worth the effort to save the plant if it has emotional attachments for you. It will also be good training in starting healthy BBs for your future collection.
I usually only put two BBs in a bag and separate them. However, in this case, if there are two attached, I would leave them together for more strength and the possibility of getting at least one new growth.
If the BBs are soft and squishy, all bets are off.