My son Daniel also experiences this after chelation. I started taking him to a cranial sacral therapist. http://www.upledger.com Daniel was standing on the dining room table - jumping onto the floor about 6 feet from the table. Taking flying leaps between the couch and the ottoman in the livingroom. He was running everywhere. CRAZY MAN!
But, here is a quick ct lesson that will help. When mercury is circulating it speads the heart rate!!! It is like he is living on adrenalin.
So place your child on your lap, making him look towards your right side. Place your left hand on his back between his shoulders. Place your right hand on his chest. Your fingers will feel his heart rate. Now, apply a light, even pressure to front and back. Your fingers after several minutes will feel the lowering of his heart rate. He will calm down some.