Phal roots, repot?

[VickiC]

Hi everyone!
I have 2 questions:
1) When I bought this phal in the pictures several months ago (I can't remember exactly how many), I immediately repotted it, as I always do with a newly acquired plant. At that time, I potted all the roots in the medium, but obviously some decided to come up and wander later. Just recently, the thought crossed my mind if maybe the reason they did not stay "submerged" as they grew was because the medium started breaking down and compacting, so they chose to grow out of it. How do you think it looks.....do you think it is breaking down this soon?

2) Directly related to 1: If so, would you repot it soon after blooming (as you see, it is in spike ) ?? The roots look very healthy and I really hate to disturb a plant growing so nicely...but on the other hand, I can feel the "pressure" of the roots against the plastic pot when I pick it up.

I would very much appreciate your thoughts and advice,
Vicki