Buds are appearing in October - can I repot?

[WeirdGuySeattle]

Personally, I repot anytime I think roots are rotting - doesn't matter if a plant is flowering, in bud, or if its growing, or if its dormant.
I held off on repotting an heirloom plant with 20 pseudobulbs that is over 40 years old and it nearly croaked on me (down to 4 good pseudobulbs) because I was too scared to re-pot the thing.
I've lost more orchids to root problems than any other reason, and all orchids - even ones that "hate repotting' have been improved by repotting out of media that has gone bad.
Fear of repotting is bad in my opinion. Just a little research on how to go about it and courage to do it will keep your collection thriving.
Snip the rotted roots, get as much as the old stuff off, and repot into something fresh appropriate to your orchid.

Its especially tough to want to repot your prized specimens for fear of damaging them! I am still trying to figure out how to handle those in a more permanent potting situation.