Okay, so take it out, clean the roots, repot it, snip off the dying blooms, and spray with fungicide. Got it.

What's the best mix for cymbidiums? I've found different sheets saying different things, but after owning sand boas and finding a lot of their care is inaccurate I'm skeptical of all care sheets now. I read a bunch before I bought it, but they weren't very helpful. Which is, of course, why I'm here! And what part of the plant do I spray with fungicide?

Oh yeah, and after I repot it should I give it the bloom ferts or the growth ferts?

And one more thing, if the roots are extensively damaged, should I cut off the flower spikes and sphag and bag it? Or something else?