I have read all the posts in this thread. I was adopted at birth and my parents told me when I was very young. I don't remember when. I would have answered a post or two earlier, I wasn't on the boards much because we buried my father yesterday. He wasn't my bio father but he was my Dad. What I get from the original poster is that her husband feels that he was forced to sign away his rights, no matter what age he was and that he kept it a secret from his own family. At 16 he was probably scared and confused and the Parents of the girl, thinking this would be best for their daughter adopted their baby. The fact that they waited 2 years for the OP's husband to sign away his rights, tells me that they made sure he was old enough to make the papers legal, a minor can't sign a contract and is not legally bound if they do, also never telling him to either consult his parents or anyone else that could have helped in the decision, I will not speculate what they said to him, the grandparents or their daughter but he must have had some contact during those years. It is a messed up situation. I think that putting himself on reunion registries and keeping his contact info current would be the best option for now.
I personally like knowing the truth. I am currently trying to find my bio family but I have very little info. I also was adopted in the toughest state to get info on bio families. I am trying to get my original Birth certificate, I can't at this moment. Over ten years ago, my Dad said that he felt forced to sign the adoption papers to take on the responsibility of a child, me. He was over 30 when he signed the papers. I was upset to learn this, also angry, and it gave me a way to see him as a person and to let him know that I loved him hours before he died. He understood. Anyway, it gave me peace.