completely makes sense.
Personally, it would raise an alarm with me if dramatic improvements occured in obvious damage-related areas like gate, vision, etc. I am partial to the belief that stopping the damage caused by CCSVI is just step one. It is just stopping progression. Healing is another beast and it takes time, a lot of time, if it happens at all.
It all reminds me of a good friend of mine who suffered a severe TBI. He is about 90% of his prior self, he has regained a LOT, but it has taken 5 years + tons of hard work and therapy. It was far from a quick process.