I do hope you feel better soon. It sounds like you kinda already know the answer to your question =) Remicade can bring on neurological symptoms, although they say its rare. I don't like saying anyone's symptoms sound like MS because there are so many other things it could be. You do describe some symptoms that point in that direction though, and your doctor needs to be made aware if you have not done so already, especially prior to your next infusion.
Memory loss sucks, it often takes me a very long time to make posts, and often I go to the doctor and forget what I went for LOL. Your post was very detailed and well written, perhaps copy it and take it with you to your doctor?
Good luck and feel better!