Don't worry about it...it's a super tough orchid. I grew one for years...grows like a weed and is a reliable bloomer. It grew so fast I had to divide it about every 2-3 years and it never missed a bloom...even after a major dividing. Tough orchid.
FWIW - If that one were mine, I wouldn't worry about getting every piece of media loose. I would soak it overnight and try to loosen the roots and then gently work as much of the old bark out as I could w/out causing any damage. Leaving some in there won't hurt it though. After that I'd just pot it up and back fill.
BTW - your plants is Bc. Yellow Bird which is Brassavola nodosa x Bc Richard Mueller. (Richard Mueller is B. nodosa x C. milleri)