A possible fusarium wilt case on cattleya

[withoutid]

Hi all,

My C. Hardyana seems less vigorous than it used to be. Some leaves turned yellow and some turned wrinkle while still green which led me to suspect that it may get Fusarium wilt. Although I highly expect to see my favorite plant to bloom this summer, I have no choice but to cut the rhizome to confirm or reject my suspicion. I found some red on the bottom circle on the rhizome section. It resembles fusarium wilt to me. I tried to save the plant by cutting along the rhizome until no red ring was found. The final result was 2 divisions, one has 2 and the other one has 4 pseudo bulbs. Please let me know what you think. Here are some photos of the rhizome and leaves.