I'm not sure if this will be helpful, but I watched an Oprah the other day and Jim Carrey's wife/girlfriend was on talking about her son and autism. She has written a book "Louder Than Words: A Mother's Journey in Healing Autism". She believes that vaccinations played a role in him developing it and he also had seizures, became withdrawn, flapped his hands, etc. She mentioned putting him on two special diets (no gluten and a candida diet I think) and began a program working on playing, speech, etc. He began to improve within a few weeks. The showed him on Oprah and he seems to be doing very well.
She said she had a lot of difficulty with her doctor and many other people in the battle to help him. All of the doctors said that it couldn't be related to vaccinations, but she said that she felt it was and so wouldn't give up. I hope it helps. She really seemed to think that it helped alot.