Oh honey, this all sounds so awful, but I can relate. Sam was "spirited" too. There was one point there where he only slept 4 hours in every 24 and someone HAD to be there or the results could have been utterly catastrophic.

Sam has a sensory integration disorder - specifically vestibular hyposensitivites. It was fairly easy for them to diagnose. He could spin around on the spot for hours on end and never get dizzy. Heights don't frighten him, but it sure as hell scare the living crap out of me when I found him running around on the roof!!!

We bought a trampoline and moved onto food control measures. No bad additives at all, and the majority of our food is fresh prepared. Obviously the whole lot of us had to move onto this diet too, and I might just add that DH and I have never felt better and DH who had been fighting his weight for a few years actually started losing it. (Believe it or not, he let himself go during his MLC).

Sam has been much easier to deal with, and what really surprised me with it was we went from a kid who wet his bed every night to one that only has the ocassional accident. I am not sure if it has helped reintegrate his vestibular senses yet, but it has helped I think to have stuff that he can do in a physcally active manner. Like the Wii - what a godsend that thing was. He really works up a sweat playing it, and loves the wiifit. He is causing no trouble while doing it and is running out some of that excess energy he has.

hope some of this helps.
Good Luck!