Vanda orchid bacterial spots need suggestions

[WeirdGuySeattle]

agreed with the folks here. Those dead leaf spots could be from a few sources - bacteria, sunburn (which opened up a spot for bacteria), water pooling on the leaves for too long, cold damage.
In any case - I agree, those look mostly healed to me, and you should only worry if those spots are spreading to the stem / other leaves.
The roots also look fine to me - though maybe some are squishy? Check to see if they are squishy and rotted, or stiff and living (without breaking them!)

As far as culture goes - I am not sure I can help much other than if you are finding rotted roots - you may be over watering (but that is tough to do on air roots like that). They can take a little water break and not have their roots green, especially if it gets cold.

When their roots go white, it just means they are protecting themselves from rapid water loss, but they might even like a day or two between watering.