By all means get a attorney. But will this help you get the house? Will this help you? Once the house is sold to someone else, will you be able to get it because of your Mortgage Broker's error? Do what is in your best interests. Going after this could prolong the grief. I am not in your shoes, so I can't pretend to understand your anger and frustration. I know I would be pretty ticked off. Make sure you get your money back and then do what is in your best interests. If you can change the situation, by all means go for it, but do what will cause you the least grief in the long run.
Good Luck and hope things turn out right for you.
Punta Gorda Realty
If you have legal questions, you should contact an attorney. In many areas, they will not charge for a consultation and if they do, it is usually reasonable and worth the advice.
Best of luck to you,