The plants around here do whatever they want to...they hang their roots up, over and around. I have quit fighting the inevitable....especially with a few of the phals. Some of my Phals have just amazing roots in the pots yet feel the need to grow aerial ones that go all over. If I repot the wandering ones, they just grow back upwards where they like it anyways. I even tried setting heavy shells on top of some of the aerial roots, they just attach to the shell go around it and back up on the other side.
Connie