"They're quantum locked," the Doctor rambles, pacing back and forth to try and shed some of the excess energy that comes from an encounter with them, especially one so fraught with intense emotion as that had been. He smacks his forehead with his hand, an attempt to snap him out of it. "Normally, they might displace you through history and feed off the energy created from that, but I don't think they were going to do that," he says, given how cross they probably are with the Doctor.

No, they probably had been ready for a kill.