Why on earth do you still want to work there?
Frankly, Id be looking to work elsewhere.
And posting their name up on a hacking website.
:P
Just to point out the error of their ways of course without doing anything yourself...
Edit: just seen your last post. Accept the job and hand in your notice and move and get the 4k. Why on earth would you want to stay and work for a manager like that? Even if they offer 5k is it really worth the grief? Odds are the other company would be a lot better.