Hmmm...I'm going to say real.
A) It's definitely retarded enough for someone to have done.
B) It looks, and sounds real.
Also, that block would have fallen with the acceleration of gravity only, that it 10/m2. I don't know how high that crane was, or how long it took the block to fall, so I can't calculate its speed at impact at all.
Assuming that the pivot was exactly mid-way along that board, surely the same amount of force would have been exerted on the man, as the block exerted on the board.....
which would seem to mean he should have been killed....
hmmmm...
I suppose it could be real...meh...
Widewinggggggggggggg I need your immense knowledge of physics here please......