Well, it sounds as though he has something he really needs to get out of his system; I wonder if there's another way you could find to help him express what's going on inside? I have often found reading books with kids can be a great opening to meaningful conversation--sometimes they need help getting to a place where it feels safe to talk about what is bothering them. Maybe look at some of these?
Lynd Ward, The Silver Pony
Donald Hall, The Man Who Lived Alone
William Steig, Sylvester and the Magic Pebble
Maurice Sendak, Where the Wild Things Are
Judith Viorst, Alexander and the Terrible, Horrible, No Good, Very Bad Day
Or, if he likes listening to chapter books, you could try Madeleine L'Engle's A Wrinkle in Time, or perhaps some books where the kids triumph heroically over evil, such as CS Lewis's Narnia books or Lloyd Alexander's Prydain Chronicles (my boys love these, Groucho [my middle one] in particular--he's the one of my three who is most easily overwhelmed by emotion, frustration especially, and he finds this kind of book deeply satisfying on a very primal kind of level; he's also the one who is most involved in tale-telling about their imaginary enemies). Fantasy books in general I think are important for children's emotional growth. Mythology has also been well-loved at our house, especially the d'Aulaires' books of Norse and Greek myths and Christie Harris's wonderful Mouse Woman books, which are retellings of Haida myths (the Haida are a Pacific Northwest First Nation).
I think you are quite right to be asking the psychologist about his gifted education; it seems to me that the behaviour is a symptom and that they need to be getting at the causes as well.
Do keep us posted; we'll be thinking of you.
peace
minnie
