Unpot Newly Potted Phal Because of One Rotten Root?

[Ginger9899]

This is probably obvious or at least not something I should be thinking so hard about. But, I am so I would like to know the lesser of the two evils here.

I purchased a Phal ('Polka Dots') and enjoyed it's blooms for a month or so and repotted it because although it's roots looked good, it was in either a peat/bark mix, or a badly broken down bark mix. I potted it into a clear pot with air holes in a medium/large bark mix (w/perlite, charcoal) and added a little CHC. It's potted up so nice and now a couple weeks later I see a rotten root across the bottom of the pot. I'm not worried about rotten roots, tons of others roots look great and I imagine this was just one on its way out that I should have cut when repotting but didn't.

My question is, should I unpot this phal to trim off the big rotten root at the bottom then pot up again, or should I ignore the one rotten root and let it be since it was just repotted and is trying to establish.

Thank you for your advice and patience.