Is Alex still a baby?
My little girl started acting this way, too. A few weeks of extra work, and she is getting better.
My SO swears she actually tried to bite him, but she never actually lunged at me. I don't believe him btw.
The best thing is that you work with him/her often. Don't give into bad tempers. Show her that you are not out to hurt her, and try to approach her from in front of her, rather than above (which is typically predator-like behavior). Pick her up as often as you can. She will eventually learn you are not out to get her.
One of the things that seems to be working best with me: I let her run free-kind of. I sit with her on the twin-sized bed in our 'herp room'. I also feed her phoenix worms during this time.. but I let her sit on the bed and move around a bit. She has gotten so that she even runs up my leg or my belly now. Ok.. now I'm gushing!
But watch out! Today I almost got pooped on. That stuff STINKS when its fresh!!