The photo is so far out of focus the only thing you can do is to make it tiny (25% of current size), sharpen and fix it up the best you can, and use it for web. You’re never going to recover the faces, so the only thing you can do is to make it appear sharp by shrinking it and letting imagination do the rest. Something like the attached (Note: you need to download the image to your computer to see it at actual size).
2rb.png