Commander Rime's intervention was dangerous to Gravis' path. Gravis' Will-Aura had already grown from the battle, but it hadn't grown nearly as much as normal. The fight had been difficult enough to give him a significant boost to his Will-Aura. The fact that he had been under enough pressure to understand another Law proved that fact.
Yet, Commander Rime's intervention had nearly killed the feeling of danger. If Commander Rime had been ready to interfere with words, it wouldn't be illogical to assume that he would have also been prepared to intervene physically. This fact took away a large chunk of the feeling of danger.