We didn't know any better at the time, but we had our spider and pastel boys in the same bag on the trip home. They seemed fine until we opened the bag. The spider was doing exactly what you were describing. He did it again a few weeks ago when we were trying to pair him with one of our females. I think he must have smelled the pastel in there from a few days prior or something... I'm not really sure because that boy is just plain retarded every day.