Can you post some pictures please?
Sounds like you know it's crown rot.
Depending on your personality you may just want to start over with a new plant. However I tend towards the nerdy side of things and would keep the plant as long as things are still green, especially if you still have some green spikes. Your plant might well grow a keiki thereby duplicating itself.
You should probably go ahead and repot it if you're going to keep it but make sure to repot it in medium that you are comfortable and capable of watering appropriately. I underwater so bark isn't a real good candidate for me. Let's say you underwater too, in which case you could still use some moss or a moss/bark mix just be sure to check your medium, saying with skewer method, before watering next.
If you do decide to keep this plant to see how it goes - again I suggest this
- you should probably get it a friend... and another for yourself.
I might also add that in the future if you're uncomfortable repotting a new plant b/c it's in bloom - which is something you can do btw but it can come at the risk of the blooms, especially if you're not careful or don't maintain proper moisture in the new medium - just be sure to check the moisture of the moss it's in before you water again. A lot of times Phals are PACKED in moss and that moss will retain moisture for weeks. Plus Phals don't really mind drying out a bit between waterings just don't let it dry out for long.
Good luck & do post pics.