Rescue vs. Minions/Victims
Had to get there. Had to get there soon and fast. There was an urgency to get to the location that refused to ease up until he had reached his destination. Dean knew that he was being followed, even in his current state, he was aware of that. However, since she wasn't standing in his way or doing anything to hinder him, Dean chose not to lash out. Yet. It was only if she started getting in his way. But she wasn't ... Maybe she understood? No. It was jumbled in his head but Dean knew that Ruby didn't understand anything. Maybe. She was just following him because of ... Because of Sam. Dean never forgot about Sam. No matter what happened to him and he wasn't forgetting about Sam now. This would be good. It was time to go home.
Time to protect the Key. Ruby following him and even Sam drifted from his mind, his focus latching onto that one thing. That and stopping the ones who wanted to intervene. It wasn't very long with all that was happening around him, before Dean spotted someone moving and swung out and decked them.