I'm probably not the best person to be offering you advice, especially considering the regular contributors to your thread, so take this with a grain of salt:
If you're really concerned about the goat humping, what worked for me was rolling my behind on a wall. I would just stand in my hallway and get into my address position without a club and shimmy my butt onto the wall. Then I would simulate my swing in slow motion and try to keep my rear end on the wall. I really wanted to isolate the muscles that I was using, where to apply pressure with my feet, etc. Once I got that kinesthetic sense down, I started to incorporate it into faster movements and eventually real swings. It felt weird at first, but after I did it enough times, it just became a normal motion to me, and the downswing move I used to do feels weird to me now.
Again, I'm no expert, so if one of the other guys comes around and tells you not to worry about it, just pretend I never said anything.