Help!! Almost killed my Masdevallia titan

[Tindomul]

So I didn't realize that I over watered my Masdevallia titan (see this post Masdevallia (Regalia) titan). It was set to give me a second bloom from an earlier spike, when I saw it this morning the bloom was blasting. I decided to look at the roots and yup, brown stuff. I unpotted, cut off all the dead roots. Some were mush, most were just hollow and black. Two roots were left, but they were brown, though not mushy at all.

So I repoted in a much looser medium. A little tree fern roots for drainage, and a very open airy medium of tree bark surrounding the plant itself. Put the plant in a humid yet dry spot. Hopefully it will recover.

Do you guys think it will be ok? What would you have done??? Thanks.