Hi Brooke,
Unforunately, it does. I have seen it.

Here is a link:
Images of Fusarium Wilt on Orchids

Well, comparing your pictures with the images from that website IMO your plant does not have fusarium wilt. Have you noticed small chlorotic spots before the cell collapse develops?

I remember several years ago when fusarium wilt was diagnosed in orchids but it was coming from an orchid mix with peat in it. Whatever bog had produced that batch of peat became infected and created havoc for not only orchids but also "dirt" plants.

The pictures on the St. Augustine website does not, to me, look like the same problem.

Brooke

It doesn't look like the same issue to me either.