dividing oncidium alliance

[deathofregret]

goodness, i can't seem to get enough of you guys this week! so today i'm repotting an oncidium alliance that's finished flowering - the spike has gone brown and papery.

i removed all the old potting medium to reveal a majority of roots that are dry and papery, with what seems like very few healthy roots. the new growths have healthy baby roots growing at their bases, but they're teeny-tiny. the plant is fairly large. is dividing an option in this situation? if it is, can someone guide me through it? should i be cutting back the papery roots? the leaves are a healthy green color otherwise, maybe slightly too dark from under watering and slightly damaged from the original vendor. (the NOID plant was a gift from my husband. after all these problems, i'm going to stop buying from stores and try to find someone that focuses only on orchids.)

the psuedobulbs on the plant are also crinkled, which makes me think it's not retaining enough moisture and might need to be watered twice during the week after repotting.

anyways, thanks!

- h