Help! My orchid is running away.

[Hanako]

Hello,
I dont know what to do with this orchid. Its a phalaenopsis. Its not two plants, but one that had kind of grown a twin, and they're both trying to escape the pot.

Can I cut it over somewhere in the middle (without cutting any roots) to divide it into two, or should I leave it as it is and just repot it in something bigger?

If repotting, I know it should be done when it has finished blooming.

Also, I can't mount it since the air here is all to try for it to be able to thrive.