I feel you. Got something similar, but instead of the other team leaving, MY TEAM didnt do nothing to kill de servitor. After I deposited 45/75 motes (and Im almost sure i deposited more) got the servitor spawned. My teammates were just dumb to constantly shoot it even with the primeval things alive AND IMMUNE to the taken blight on the sky. And not even counting we were 3vs4 and the other team being sweaty constantly invading for killing us. It was the only time i've saw it this week........