When Hou Yiwei learned of the defeat of the Jiang and Ye with their flag being stolen, he suddenly lost his composure for a second. He wanted to kill the group that actually defeated the Twin Blades, and he could see the flag location on the map.
If Hou Yiwei learned that only one person actually defeated the Twin Blades, then he would also become wary of him. As he became distracted, Frey managed to shrink the distance between them. She is about to stab Hou Yiwei in the chest when the shaman player interfered with a spell that can momentarily disorient or confuse an enemy.
"We are tracking down the guy that stole our flag." Hou Yiwei stated as he provided cover fire for his other two team members to retreat. Their objective now is getting back their flag as the generated points stopped.