Hello Nicole, I am sorry your phal lost its leaves
Personally I would repot and check for root rot, from the pic it looks like is potted in soil and bark? If so, lose the soil and only repot in bark and as the others said, cut back all mushy and black roots, if you lost a considerable % of the root mass consider soaking in a KLN solution to boost the root growth. Definately cut the flower spike all the way to the base of the phal, since this takes a lot of energy from it, and just put it in a warm shady, humid place so it can focus on regrowing its leaves.
You can always put those beautiful blooms in a vase and enjoy them just as long as you would if they were still on the plant.
Just my 2 cents, hope it recovers, keep us posted.