Dealing with crown rot in vandas:
While I don't have it often, it does happen. I remove the infected parts and spray with a fungicide. I roll the roots up loosely and use a tie to keep them rolled up. I then turn the basket over and use another hanger to hang the plant upside down. Doing this I know there isn't anyway for moisture to seep into the crown. It keeps the crown really dry. It sounds crazy, but it works for me.