It is definitely fake. at about 25 seconds, shortly after the wing falls off, he descends in a spin but he’s spinning the wrong way. A spin is caused by the inside wing being stalled and the outside wing remaining flying due to the rotation giving it a lower angle of attack. With the right wing gone the plane must spin to the right, in the video it’s spinning left. You don’t really need to see anymore than that.
There was a chap called Neil Williams who had one of the wings fold up while practicing aerobatics, he managed to fly an inverted circuit which kept the collapsing wing rigid and rolled upright as late as he could, he still did significant damage to the aircraft.
I don’t see any problems at the 45 second mark, he’s flying on the knife edge which is a common manoeuvre, it basically uses engine power and the keel surface of the fuselage to maintain altitude.
The aircraft doesn’t seem to have enough inertia as it lands though.