Dirga's form, which was still that of a soul, was not dragged into the current. He let the current pass through him, then dragged everyone in the room outside. The young man followed his own body, which was also dragged into the waterfall. He didn't feel it was a mistake, even though he knew that all beings had instantly awakened from their unconscious states when they were dragged by the waterfall and were vying to save themselves.
However, the Dirga did not do it.
On the contrary, he was even curious about what was under the waterfall, so the place was used as a way for them to get out. "After all, we should really get through this if we manage to wake up from the unconscious, right?" he thought, still following his own body as it plunged down.