There still is the item of what was causing a distinct vertical spray from the Main Spillway. This vertical spray was well above the mid section failure spray. Again, that is due to the poor angle of the photo. Shooting from the toe with zoom lense doesn't accurately capture what is happening. video footage on networks today show nothing unusual. where the water drops from the upper chute into the damaged section has been making a lot of spray all along. Here is a better angle
There is an image that does show this distinct vertical spray. Since the image was late at night on Feb 14, there could have been a transitory event that was causing the spray.
The angle of the late night image was north east of the main spillway overlooking the reservoir.
I will have to dig this image up.