Can I save these roots?

[Nic100]

Hi fellow orchid lovers!
I bought this fella at the end of July, and earlier in August I noticed the psuedobulbs starting to wrinkle. I took it out of the pot to look at the roots and found the centre of the roots still in a tiny nursery container packed tight with sphag moss. I removed it as carefully as I could along with any of the roots that seems mushy and repotted it in bark. Having not seen any improvement I have taken another look today. The remaining roots are as you see them. The original spike of flowers were over a couple of weeks ago but the second spike has continued to open buds -presumably using stored resources! Having checked over old threads I'm not sure if these roots have any life left in them. There doesn't seem to be any green anywhere (other than moss!!)...
Any advice would be gratefully appreciated!
(In terms of how I cared for it - for the first couple of weeks it sat in my dining room where it got light and warmth most of the day, but no direct sun. Once I saw the bulbs start to go I moved it to the sunny window sill in my kitchen which is the warmest, brightest room in the house. I have grown phals over the winter there so thought it might be a better spot.)
Thanks in advance!
Nicky