I don't know if this will help or not, but some of your original post rings a bell, Artana. I have been reading about Visual-Spatial learners (as opposed to audio-sequential learners) and there are some interesting bits in there. One point is that the flow of time is a very sequential event. If you have a V-S kid, then they may struggle to grasp the flow of time. You might want to look into the book Raising Topsy-Turvy Kids: Successfully Parenting Your Visual-Spatial Child by Alexandra Shires Golon. It is a wonderful book for explaining the idiosyncrasies of Visual-Spatial kids. I'm a big fan of my local library, and rarely buy books. But I think that I will buy this book and give it to my DS8's teacher each year. I think they will understand him better afterwards.

Here is a quick link to some of the classic behaviors of a V-S kid. (or if you have WISC-IV data with a high Block Design score!!)

http://www.gifteddevelopment.com/Visual_Spatial_Learner/vsl.htm

Hope this helps. And about the behavior issues. That seems very familiar too. For us it was a food reaction, but that is pretty rare. DS improved dramatically when we took certain foods out of his diet. But I also tend to think of these kids as accumulating a lot of "internal friction" during the day due to the fact that they are slightly out of step with the world. Sometime the friction just builds up to a point that it comes spilling out. I don't have a good suggestion for this one. At eight, DS is better at controlling his emotions and finding acceptable ways to release that internal friction to keep it from spilling out inappropriately. But it was a long, hard lesson to learn. Hang in there. It does get better as they get older.

Mom to DS12 and DD3