The moment Virala purposefully moved in the direction opposite to the 102nd Empyrean Tusk, Gannala became aware that he could sense the existence of his other body. Hence, in accordance to their plan, the 102nd Empyrean Tusk grabbed the Mammoth Clansman Virala's Nature Weapon form that popped out of her Tertiary Nature slot and threw it into the tunnel at her feet with all her might.
The Nature Weapon flew through the tunnel while Gannala purposefully moved underground with enough activity that Virala would be able to sense her approach through the senses of his Mystic Ewworm and evade.
To avoid getting unnecessarily close to the Empyrean Tusks, Virala could only evade towards a safer spot. Gannala's direction of approach narrowed down the spot Virala would flee towards, making it easier to target the tunnel's exit accordingly.