These may be difficult to see but the information might be worthwhile.
I had a large plant of Cycnoches chlorochilon that developed rot at the base of the bulbs. I just paid $45 for it and wanted to save it. For the money yes but because I felt that it was awardable.
Here comes the cool part. I cut 2" into good tissue on the largest bulb and treated with cinnamon. Cut the now 12" bulb, sans roots, into two pieces. Treated with cinnamon. I placed them in the shade and within 6 weeks, I saw a new growth starting and after four months it is what you see in the top picture. The roots came out first followed by a new bulb, then leaves.
This Fall, picture 2, I am going to wedge a butter knife between the bulb and new growth and it will pop right off. The roots are such that I can pot it up as an individual plant. Treat cut with cinnamon. Hopefully it will survive. You can see the old bulb going vertically within the pictures.
This is something that can be done with all Catasetinae!!