Problem with awarded Dendrobium

[akumok]

Colleagues orchid growers!
I’m trying to determine what disease or virus or fungi related problem I’m having with my Dendrobium Sherry Abe. Take a look at the pictures and if you know, I’m all ears. I noticed it when I got plant back after the show.
This my awarded AM/AOS plant and loss of it would be really devastating

[estación seca]

It looks like the leaf was bumped and scratched, and maybe the plant was not watered enough. This is how Dendrobium leaves look when they're getting old and dropping off. This sometimes happens because they're old, and sometimes because they're kept too cool and with low humidity, and sometimes when they don't get enough water.

How long was it in the show? What was the temperature and humidity range at the show? When was the last time you watered it?

[akumok]

Watered a 2 days ago. It's a 6" pot. I'm going to move back to greenhouse where obviously more humid but afraid in case this a virus or disease it can spread over there very rapidly.

[estación seca]

If that developed during the show, it is not a disease. That is too fast. It is more likely the drastic change in the environment.

[akumok]

Thanks, will move to greenhouse today and will try to to nurture back to normalcy