[Myka]

Have you considered taking him to a behaviorist? Often the roots of the problem lie within the "pack", and him thinking he owns the place. You may find that once he has been neutered and you get a behavior into your house to watch you deal with him in day to day activities s/he should be able to point out signals of his leadership he is giving you that you could interrupt.

Another thought is to tie him to you. That was another thing I did with Peewee when he was urinating in the house. It's called "umbilical training" because essentially he has to follow you around, and do what you do when you do it, and pay attention or get ripped off his feet. I found it best to do with a harness because there will be sudden movements, and you don't want to injure him. It will be a pain in the butt for the first hour, but after that he should catch on real quick. You don't talk to him, and you don't call him to you as you go, you just go about your business with him tied to your belt. Give him just enough slack so that he can see which way you're going just before the leash gets tight so he has some warning before the "auto correction" gets him. If you tie him to you every time he's in the house for a couple weeks this should make a big difference too and doesn't take a lot of effort.