I would agree. Shit happens; deal with it without wasting more resources on it. [BUT, If you can afford the legal fees and more importantly -- the TIME -- go for it, but do not go with the idea of vendetta in mind, but rightful compensation.]

I somehow like the idea of 'Let Go', though easier said than done, this will make you realize many things in life and prepare you for the Future than continue to lurk in the Past.

(Or is it the Buddha in me talking!!)