Repotting rootbound Phalaenopsis

[editorbob]

I'm a repotting novice. I recently purchased a very nice, blooming Phalaenopsis that I need to repot, as it was store-planted in a mix of odds & ends and I want to get it into our Coco-Chip medium. On inspection, the plant proved to be quite rootbound -- most roots look healthy but are wrapping around the inside of the pot rather tightly. I've read the Member Article on repotting, and it does not address my question: When repotting, do I need to loosen or otherwise rearrange the roots in the new, larger pot, or will they take care of themselves once they have room? I welcome all tips & tricks, thanks!