Reading your story makes me realize how jaded and costic I really am hehe. If it were me, I wouldn't have been so patient with BI and the boss, but then again I would have been fired months before! I don't think getting lawers involved is a good idea. Sure it would get you satisfaction monitarily but for what purpose? God has this way of making bad people suffer, leave it to Him to judge! If they keep treating people badly, they will get caught and punished.

My dad always told me "Living well is the best revenge"

If you succeed, it will irk them a lot more than if you sue them