Wow. What a tough situation. I can't believe a resue would put a dog down becuase he bit once. Esp. since itis hard to know what the child may have done. Was the bite provoked? And a behaviorist has said the dog is not dangerous.

Obviuosly the best thing would be if they continued to work with the dog and began to trust him.

The next best thing wouldbe to break the contract and rehome him, maybe to someone without kids. I don't know how much the rescue follows up on adoptions, but if they are going to PTS I would definatley rehome.