A couple of comments:
1) Could the pilot of a B-17 drop the bombs? Yes, the pilot had an emergency salvo switch to lose the bombs if the bombardier was wounded or killed. He had no sighting device to aim anything.
2) During WWII, they made a distinction between "Dive" bombing and "Glide" bombing. Both involved dives but true dive bombing was done at an angle greater than 60 degrees. Anything below that angle was referred to as glide bombing unless it was "skip" bombing where the bomb was "skipped" off the water or the ground (not modeled in AH but used extensively by B-25s against Jap shipping in the Pacific).
3)The bomb load of a B-17 was rated at 8,000 lbs. Not only could it be carried internally but early models also had one hardpoint under each wing to carry the 4,000 block buster which did not fit in the bomb bay. If fitted with these special external racks, maximum normal short-range bomb load could go as high as 17,600 lbs. Now a full crew is one thing at about 2,000 lbs max but if you add four to eight times that much in bombs, then the fuel and then the ammo for all thirteen guns....well I doubt you'd be doing 90 degree banking turns or pulling out of steep dives in one piece. Also, the ordinance was connected by shackles that were rated for specific weights, I don't know if they could take the apparent weight of a G loaded 1,000 or 2,000 lb bomb at more than a couple of G's.
Just some random thoughts.