Help needed on reviving my dendrobium!

[NYCorchidman]

Hi, all the orchid lovers out there!

I got this NOID plant in bloom back in August. The bark it was planted in looked too old and mushy to me, which retains too much water. So I checked the root, and wow~ all the bark was wet and mushy, and the roots were mushy as well. I dumped everything right away, trimmed the dead roots, which was pretty much all of it. I wondered how it was able to look so healthy and even in bloom when the roots were bad.

I wasn't sure what to do, and didn't have any good potting medium for dendrobium at the time, so I just hung it on my window blind as in the picture.
I misted a few times everyday to keep it alive.

It managed to stay in bloom in the past three months in this condition. I'm surprised by how tough this plant is!

As of yesterday, it dropped all the flowers (25 of them) and all the leaves turned yellow and dropped. I guess it dried out over time because it had basically no living roots. The dormant eyes toward the bottom of the canes are all black and gone (this was the case back in August) I think it was kept too wet in the farm.

I want to try and revive the plant, but never done this before. I've read somewhere that you can lay the canes on moist sphagnum moss and little plantlet might grow from each node on the old cane.
If anyone has successful experience doing this, please share with me some tips.
I love the flowers on this den and it smells so nice too!
By the way, some of the cane had two keikis on them and I cut them and potted them up. They are still green but not showing any signs of growth yet.

Thank you for reading.