Should I Worry about This Lcn. Pseudobulb?

[c123anderson]

Hi all. I wasn't sure where to post this question.

I was gifted this cutting of a Laeliocatanthe. I currently have it in a bark/charcoal mixture and the plant seems to be sprouting new roots and has new growth.

I cleaned it up, removing the dried sheaths, and noticed how brown this pseudobulb is. The second image was taken a few days ago; the first one was taken three months ago.

The remaining plant seems to be healthy.

Should I cut off the rotting part of the pseudobulb?

And, I'm sure, I should try to discern why it's browning and rotting. No other disease/fungus seems present.