Necessity makes for crazy decisions. They probably been holding it longer than you and were already talking about it. When they saw you go in, they knew two things, one, the woods would be safe from any kind of animal, and two you'll be just as vulnerable/exposed as they would be. I would have followed you because it would have made me feel safer. As for the closeness... I'm going to look, so you may as well have a peek too... what are the odds we'll ever see each other again. Boring traffic just got a little exciting, and we will have something to talk about while we wait.