Speed is not the problem here. The front suspension setup is the culprit. The shocks simply did not/ could not control the full spring rebound.
We have seen similar behaviour from FDO1 and Shabab's safari's in the past. It happens when you put very heavy duty springs and in-adequate shocks just cannot control their rebound!
Also lack of experience, there was a huge crowd gathered there, meaning it was an interesting spot for action viewing and action photography. Its always better to lift off at such places, because one tends to keep an eye on crowd and miss the bumps on the tracks etc. Also with so many people around you can never discount some crowd foolishness, or the chance of losing control and going into the crowd.
The safari jump below is hardly at 40-45kmph!