This picture from the rescue I mentioned above might be helpful to you. It shows how dry I kept the bark during the first months. I gradually increased watering when it started to grow new roots.
Of coarse watering regime depends on the climate were you live.
During winter most Phal's don't do much here, but this one kept growing roots. After winter, (beginning of April) it started several new roots from the stem.
About your plant from the oncidium alliance; I don't think it's important to know (in this stage of recovery) if it's a Colmanara or not. Treat it as most plants of the Oncidium alliance.
They like intermediate temperatures. As for watering, go for save and water only when the medium is dry when the plant is not in active growth. Again, use the skewer method to know how moist the medium is in the middle of the pot.
Plants from the Oncidium alliance generally need more light than Phal's but it can differ from plant to plant. For instance, my Colmanara can not take as much light as Oncidium Sweet Sugar. Watch the color of the leaves/bulbs. Even in a North faced window the (healthy plump) pseudobulbs from my Colmanara turn reddish which indicate it's about the maximum of light it can take for now.
Older pseudobulbs from Oncidium alliance plants may shrivel like yours as a natural proces, however, it seems to me that the ones on your plant are too shriveled for their age. This could mean the roots from the older growths rotted /died too early. This plant has a good change to revive as you have several new growth that will make plenty of new roots.
As you handle the plants bare root, be careful not to damage root tips! Also make sure when you pot the plants, they don't wiggle in the pots. The roots don't like that. Sometimes I drill holes in the side of a container and use zip ties to fasten the plant to the container. For the Phalaenopsis, you can use a zip ties around the stem and pull these trhu the wholes of the bottom of the pot. I tape these to the pot and this way I hold the plant down in the pot (preventing it from tipping over etc.).
I'll make some pictures from my plants that are recovering from previous abuse.
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