Just wanted to report that the phal I repotted into s/h a while back has decided to live after all. I pulled it out of the pot a couple weeks ago and trimmed off all the rotted roots which left it with about 2 viable roots. I was sceptical about it's survival at that point but kept up with the watering and feeding for the subsequent two weeks. Yesterday when I went to water I noticed not only a
new leaf but a
new baby root as well!

I did the same thing with my Lc. last week. It's starting to send out new baby roots so I'm hoping they'll both be survivors.
Let my experience be a lesson to anyone considering s/h for the first time.
Wait for new root growth before you repot! You might not be as lucky as I was.