I just acquired a shilleriana phal awhile back and it had a similar problem. I ended up cutting the pretty flowers off and enjoying them in a crystal vase and cut the keikeis off and repotted them. I left one spike of flowers but ended up cutting it off to allow the plant to grow more easily. All three have improved drastically, even the parent has firmer leaves that stand up again now. All three had leaves wilted and going downward instead of their normal graceful arch. Two weeks later they are thriving. I sacrifice flowers for the health of the plant on newly acquired sicko's. It makes the difference because now the plant can concentrate on growing and getting better.
Hope this helps....oh yeah, be careful to resist the urge to overwater, stick to a normal watering schedule or you'll end up with root rot.