Pooping problems...

Ok so I've only had my Peach Throat a week, but he was real calm the first few days. Now he gets very grumpy when he's taken out of his tank and proceedes to spray poop on whoever may be holding him. I know that this is sometimes a defense, but he does it even when he is sitting on your lap or the floor with no one else around and no one touching him. My question is if this is weird in that he doesn't poop ANYWHERE in his tank either, except in the water, and it has seemed more and more like he is actually pooping once he is out of his tank, even if we are letting him just walk around on his own. What does everyone think???
DJ Midkiff

PS- PREHISTORIC PETS CHINO: I LOVE MY LIZARD!!!