Angel, Yes it does move and by all the typical avenues such as water splashing on a neighboring plant. I'm going to IM you a site to take a look at some photos.

Here is some info:
Fusarium blocks the flow of moisture through the plant’s vascular system plugging the phloem. Infected leaves are yellow, thin, shriveled, wrinkled or wilted and eventually die.
The diagnostic symptom in the plant is a circle or band of purple or pinkish-purple discoloration on the outer layers of the rhizome evident when the rhizome is cut. If the disease is extensive, the entire rhizome may turn purple, and the discoloration may extend to the pseudobulbs. Severely infected plants may die in 3-9 weeks, while mildly infected plants gradually decline over a year or so."