Talk will go only so far. Now that you have set the limit it is important that you discipline him for violating this very important rule. My guess is that, if all else is OK in his life and the behavior is not symptomatic of emotional turmoil, he will stop the behavior when he incurs consequences for it.
No, there is no reason to think that the congenital anomaly has any association with the behavior you are describing. Continued education and limit setting/discipline is what is required.
I've had a someone come in today about his behaviour and She's going to send me some information in the mail. Its almost like abook that you read to the child. I've been putting him in time out and that does not seem to work. I also forgot to mention that he was born with Peter's Anomaly and the doctor that we seen mentioned something about behaviour problems is it normal in children with PA?