Rot on Paphiopedilum?

[monivik]

I've only had this one for a couple of months and it's blooming for the first time. But then I discovered a brown spot on the leaf. This is some weeks ago, I cut away the leaf but I didn't want to take more because I really wanted to enjoy that flower. I also took it out of it's pot and got rid of some bark that had some white spots on it. I then realized that it doesn't have that many roots.

To be honest I did't really repot, I just put it back with the same medium, first of all because I didn't have any fresh medium at that time, but also because I don't want to repot it yet, as it's got that flower.

Anyway I don't know how long this type of flower lasts, but it's only been like 2 1/2 weeks. Now the flower is done and I also noticed that the brown spots on the leaves is spreading. I suspect this is some sort of rot.

I feel sad having to cut away the entire growth, but I'm afraid I won't have any other choice as it seems to spread. But that means I would only be left with one growth, as this plant has only got 2. I'd be left with the oldest growth. I hope it will make it.