This plant was bought in a DIY superstore and used for decoration in a south Americans vendor's booth during a sales expo. Due to wrong watering it developed crown rot and was given into my hands. Only one leaf and a flower spike were left over, roots were intact.
I took it for the challenge and cut off the spike to save the plant's energy. Placed it on a windowsill next to my other Phals where it received regular care with reduced watering and fertilizing (because metabolism and evaporation are reduced).
After 9 months a new plantlet at the plant's base between roots and leaf was formed and grew rapidly. The old leaf was shed, new roots were formed. I avoided repotting so far.
This is how the plant looks after 2 and a half years. A commercial grower produces a plant like this from a deflasked seedling in maybe 9 months. This hybrid is sold by thousands for a cheap price in order to attract customers to the DIY stores.
For the hobbyist doctors here it may be encouragement and hope when dealing with crown rot.
If nothing happens, at least things don't turn to the worst. I had to wait 9 months for the first sign of recreation. Orchids can teach you to be patient.
In most cases, a phal will not recover fully from crown rot and with the cheap cost of phals in the market place today, it is not worth the energy to try to nurse them through. Been there, done that.