Ryan watched as Alexa loosed a blast of energy at the vampire. While she did that, he still went after his brother. They needed to split their resources or something.

Truth be told, Ryan wasn't really sure what he was doing.

He started zipping bolts of energy between Jacob's eyes. Little pings to annoy him, to get him to snap out of his possession. Its the same way that Ryan used to flick him between the eyes when they were little, before their mutations kicked in.