how do you trigger the quantum explosion spell?

[Canadian Normandy]

The "powers" patch notes states that if you have a quantum orb (red gravity orb) prepared you can trigger the explosion in your hands to push enemies away, but i haven't been able to figure out the gesture. anyone know?

[Omniblivion]

Hello there! To trigger the explosion, "grab" the orb and pull your hands away from each other rapidly. This will cause the orb to destabilize and explode.

Let us know if that doesn't work for you!