He sounds normal to me, over time and handling he will loosen up and eventually not even seem to care that you picked him up. When I first got my Spider Ball, he would jump if anything came towards him especially his head. Now I can pick him up and even stroke his head with out him even flinching. He was my most extreme case but they all went through something similar. When they are small at least their bite hurts far less than a bird bite, in fact the first time I got bit I didn't even realize that it had happened. (only happened 2 times so far with my ball pythons. My carpet python is another story though)