Do you really think that the AF would let him fly that bomber like that. If i was the CO of that base, i would told him to land that bird. When i first saw that video, the only thing came in mind is the stress on them wings.
Not only do they "allow" it but USAF used to train B-52 crews to fly exactly like that.
What you are seeing are the actual low level nuclear weapon attacks which were developed back in the days, "my days", before standoff weapons and cruise missiles were available. "At least some of the video".
The B-52 approaches the target, say an ICBM site, at a very high subsonic speed under the radar, "you saw the bomb bay doors open on some of the buffs and even saw a practice bomb tossed out in one flight". Using the Buffs own radar to track the target the buff does a high G climb releasing the B-61, or B-83, nuclear weapon at the preset altitude. The weapon has a special drag parachute which slows it down drastically as the Buff does a radical 180% to escape the effects of the blast. Ive also seen many a F-4 Phantom practice this radical maneuver. We used to practice the whole shebang. Pulling "dummy" specials out, convoying to a hot flight line, loading onto the aircraft, then launching the aircraft. The entire time on the clock and the attack aircraft would go on the mission using the same tactics as if a hot launch.
So this isn't "stunt flying". This is specific training for special weapons delivery. My guess is they still train for it because we still have free fall weapons of this type in inventory.
No doubt this Pilot pulled a bonehead stunt here with the crash. But this type of low level bomb release tactics is specifically trained for.