Hello Quinn
As soon as Vorden had entered the room and saw Quinn and the others, he was trying his best to figure out what was going on. Judging by the fact the head of the first years, General Nathan, was here would suggest it was very serious. However, Vorden couldn't make the link between him and Quinn? How had he come to the conclusion the two of them were involved in something.
If someone had spotted them when they were escaping with Peter, it would make more sense for them to call Layla and Peter, not Quinn. The only thing that the two of them had done together was head to the red portal planet.
Unknown to both of them, the thing that had linked the two together were the bite-marks. It was too much of a coincidence to see bite marks on multiple students as well as one on the red portal planet. The one connection they all had was Quinn. But they had their doubts it could be him, so now there number one suspect was the person who was with Quinn at the time of these events.