The ejection seat is going to do its thing regardless of orientation, but if that orientation is pointed at the ground you better hope you have enough altitude. There was one plane where the ejection seats ejected down and away from the plane that was known for low altitude missions. These seats were affectionately known as lawn darts.

The aircraft appear to have become "stuck" to each other perhaps due to aerodynamic forces similar to how a piece of paper gets stuck to a car windshield (probably something to do with one of the Bernoullis). There wasn't much of an impact to cause a destructive event such as compressor stall. Perhaps the pilots were waiting to see if the aircraft would become un-stuck, or to get clear airspace into which they could eject?