After I removed the four pieces, they sprung back.
So one more try. This time I soaked them for over 12 hours. Then I did something different when clamping them back down. I used some scrap 1/8" spruce sticks and broke it into a bunch of short pieces. I have those under the wood and behind the wood against the level. This makes an air space all around the wood I am trying to straighten. Maybe even drying will help. I will check on them in about 24 hours.

Going to go to the LHS and see if I can find some straight pieces also.

At this point; work stoppage.

A question to anyone. In this kind of situation do you try to straighten the wood like I am doing or should I being glueing it on the the ribs as is why wet and flexible? Seems like if I did the later it might turn the wing into a pretzel when it dried.

Ken