They might recover in good growing conditions but it might take years to get them back. To get good help you need to tell the readers here where you are in the USA.

I'm in Zone 7 in the US but am indoors.

This is killing me because the last I saw them I had nursed them to health and they had multiple spikes

I have a friend with an orchid in the same predicament. Hers has healthy looking roots, but no leaves. And it has been without leaves now for a couple of months and hasn't made any new leaves. I have read that if an orchid with leaves has no roots, it can be saved, but if it has roots and no leaves, it's a hopeless case.

I say hope springs eternal. You might keep caring for them for a while and see what develops. I have brought one back from the brink of death, but it was an opposite situation. Mine had very puny leaves and no roots at all, but I have managed to bring it back to health.

At least my answer should bump your post back to the top! :)

Have you ever tried water culture? It is amazing. Facebook water culture and orchids in general.