phalenopsis growing in one direction, pulling itself out of pot

[janepots]

I recently repotted my 6 phalenopsis into bark medium in clear plastic pots. Some of them are pretty big and were already tending to grow in one direction, but I did center them in the pot. The problem is, that even though these plants all get moved around after every watering, 2 of the biggest ones are growing so much in one direction that they are almost starting to come out of the pot. One is especially bad because it has a huge flower stem that wants to go in that direction as well..
Should I be wiring them into the pot like a bonzai?
Thanks, Jane