Shriveling potinara (cattleya alliance hybrid) pseudobulbs after repotting

[Grim Tuesday]

I recently repotted my potinara after two of three buds blasted this past month, something I attributed to poor root conditions. The mix was very badly broken down when I got it out of its pot, but the roots actually didn't seem to be so bad. Nevertheless, I figured I had already done the damage getting it out so I put it in a new pot with new media. This new media is chunkier and holds less moisture than the old but I figured it should probably like that. I also used a terracotta pot (previously it was in plastic).

Since then, the previously juicy and succulent pseudobulbs have completely shriveled up, especially the older ones. It's quite large, about a dozen growths and I'm worried about the plant. So far the leaves all still look good. What should I do to make sure the plant will recover?