Dendrobium Keiki issue

[escualida]

Hi all,

I have a dendrobium given to me by a friend who was about to throw it away. It was completely leafless when she gave it to me but the canes were still green, unfortunately there was root rot that I think was too advanced, and at the last minute it threw out (what I believe is) a keiki. However, the canes are rotting from the bottom up and I don't know what to do.

Could someone please look at the pictures and tell me if this is a keiki? It looks like one to me but it's not showing any roots.

I'm also attaching a picture of the bottom of the plant, the cane that the keiki is on is the one on the right that looks like it's brown. Should I cut it and put it on some sphag?