Phal with no potted roots but lots of aerial - salvageable?

[stripey-novice]

Hi there!
First post and I’m hoping someone who knows more might be able to advise.
I’ve this phal for about 10 years and up until recently have sadly been pretty ignorant to her needs. I repotted about a month ago and found that her potted roots had all rotted so I removed them. She does have a lot of aerials though. I feel she should be salvageable, and have watched a few videos that would suggest so, but I’m just hoping someone can me some reassurance I’m doing the right thing! Or tell me I’m not and guide me as to what to do instead!

Currently the plant is sitting in fresh bark, just the stem is potted and I’ve tied to a stake to stabilise. I saw something that suggested using sphagnum moss round the top of the pot to try and retain more moisture than usual around the aerial roots, but not smothering them so they still have air. I don’t have moss so have used cotton wool. She also had a big flower spike with about 20 blooms, but I cut this off so it doesn’t drain energy which I guess she could use to try and grow roots. She’s currently living in the bathroom and gets indirect light in the mornings and obviously it’s a little more humid in there than other rooms.

As I said, would love advice as to whether I’m doing right or not. Thanks in advance!