Dying Phalaenopsis After Repotting?

[NiomieLynx]

New to the forum, new to orchids...

I received a phal orchid back in '08 from somebody, but didn't give it much thought until very recently...

I have spent the last several days conducting research about repotting; asking workers at the local nursery and internet research (including video tutorials).

Yesterday, I attempted to repot my phal plant in a bark mixture (this plant was originally in a bark mixture when I received it.) This morning, I noticed the roots have turned black (the roots that are under the bark.) I think one of my mistakes was that I did not soak the bark over night, but the directions only said to "wet bark first", so that's rather misleading.

I suspect that I was unsuccessful at fully covering these roots. The aerial roots look the same, but the roots right below the leaves are all black now. I tried repotting it again so I could have a better look at the roots, cleanse them, and just try to do a better job. The blackened roots are only black just at the base and are still firm. Everything else below are yellow and firm and there is one green root.

I also can't seem to anchor this orchid very well for some reason. I sift and pack the media down, but when I test for security (picking the plant up in hopes that the pot comes with), it feels like the plant is just going to fall apart. The pot comes with, but I just have a strong feeling that I'm doing this all wrong.

I really hope there is some way that this poor plant will pull through, but, from what I've read thus far, it sounds like its a goner.