If you look at distance and altitude you will see that the data are likely correct:
View attachment 57236
Notice that it goes straight up, holding position just fine, until it climbs above 300 m or so, at which point it starts to move. That's because it switches to ATTI mode as a result of a significant yaw error, likely caused by taking off from a magnetically distorted location. I'll take a look at the DAT file to confirm that. At that point the wind took over, and it was strong - nearly 60 mph at 500 m altitude, so, even without the switch to ATTI there is no way that it could have held position.
I can try to estimate where it ended up, but I have to say that was an extraordinarily reckless flight.