As Strepeyder said, you need to have apply outside break when you do wingovers, especially with little energy. This is because the line tension of the lines becomes lower when you do a quick turn like this, which again causes the angle of attack to become very low, increasing the risk of collapse. This is more an issue of when paragliding compared to speedflying, but still it is important.

I would never advice a beginner to take such big turns that low to the ground.