The only way to get a werewolf from a goody hut that I know of is actually not a goody hut... One of the unique features in FF has the same graphic, and can give you a werewolf.
You're probably right and I am confusing my FFH games with my FF games, but I could have sworn that FFH had an event that allowed you to become a werewolf if you met certain conditions after landing on what looked like a goody hut. Yeah, come to think of it, that goody hut sticks around even after you get that event.