I agree with Sue.
Also, I'd recommend you to pay attention to your watering. Vandas shrivel their roots like that when they aren't getting enough water. If you're growing it outside bare-root, you should be watering it daily (or even twice a day, depending on how hot it is).
If you give it the care it needs, you'll notice small nubs poking out randomly around the roots or near the base of the plant. These are new roots. Vandas seem to stop growing when they go into bloom, and resume when they're done.