I have to disagree with this statement. The only time I handle mine is for cleaning and other maintenance, and majority of my balls don't strike. Now, I do have my male cinny that is a little jerk sometimes, and my WC females are tempermental, but regardless how much you handle ( or don't handle ) your ball python I don't think it has much to do with it.
My first thoughts on reading this is either your setup needs adjusting or your feeding schedule is a bit off. I also think it is causing him stress with moving him to another tank to feed. Please tell us more about your setup and feeding schedule and I'm sure we will be able to help you.