NO! No giving up of the ghost here!!! It has been my experience that if the plant shows any sign of life it will come back. Sometimes even if it shows no sign of life it will come back. Just provide the same care for it you always have. I had a Spider plant hanging from an Oak limb. It was huge and very healthy. One day it was missing. Just missing.
My husband found it about six months later under the porch! We figured about the only thing that could have happened was that our dog yanked it down and carried it under the porch to chew on. We deduced this because there were several chew marks on the pot! Anyway, I pulled all the brown crispy leaves from the pot and found one tiny little nub of green at the surface of the dirt. I put it right back where it had been, just a little higher so the dog could not reach it, and today it's as big and healthy as ever!
BTW, I did not know what a Tacca Bat plant was. I googled it and decided I have to have one! Beautiful plant. Good luck.