This touches on another issue. If you give the dogs away, guess who bites off (ooh, poor choice of words!) the liability for their future aggression?And I would be hesitant to try to find them another home because who knows what the next home will be like or what they or the new owners would do.
I agree with MRD that talking to the vet is a good idea. Along with ideas for what to do with the dogs, they are more likely to be better acquainted with your local laws pertaining to aggressive animals.
I'm going to revise earlier advice that I gave--instead of maybe going to an attorney prior to going to Small Claims, I'd go NOW before the situation escalates. You've been placed in a very bad situation through no fault of your own.