Yup. That sounded like a boggart. Remus still felt awful, but if that was the worst thing blocking his path from getting to relative safety while he was a werewolf, he could manage.

"Sounds like you ran into a boggart. They're creatures that transform into a person's worst fear, and they're usually not harmful, well, at least to your physical well-being." Remus' head was back against the tree, trying to keep the dizziness he felt to a minimum. "I'll try to get rid of it soon. Well, after this full moon anyway."

Remus had made up his mind about finding a place to transform. He's find a place to lock himself inside the old church the man had mentioned. He would just have to make sure that he put a magical lock on the door so people couldn't come in and get huurt, and so he couldn't get out.