Obviously impossible to tell for certain from the video, but is it possible the dyno run was done in 3rd gear? Could have skip shifted before the WOT, but that could account for the crazy graph and numbers.
Post a picture of the turbo from underneath the car. (Free $$$)
Go to another dyno to obtain the correct the numbers, go back to the previous dyno and request money back for a misrepresented HP/Tq numbers with the proof from the second correct dyno test. (More $$$, Time)