Haha.. I'm not sure how well I can answer this Charlie, since I have never been married. I like to think that if I was I would continue to be motivated, self sufficient and respectful.
However, just to play devil's advocate..Why should us guys have to keep putting the seat up? Why won't women put it up when they are finished? Haha ;)
Also you may want to check out ravenIt04.. She wrote an excellent hub on this topic (Wives, survive!)
To answer your question, I think that it is possible to fix him (cringe:) depending on the guy, and how you go about it!