Plus he got the moon thing wrong (allegedly!). I don't think we can trust any ear witness 100%, you could pick faults with any of their testimonies. Is this the two students who had their windows open? I know that was mentioned before as I remember thinking 'who are these people with their windows open in the middle of a snowy January night?'
![Wink ;) ;)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Maybe that made the screams clearer to them. The students are also more likely to have been awake at the times of the screams, and not recently roused from sleep like Mr Alford.
Also cannot really discount the accounts of two people because they are students, when it was two students who were astute enough to notice the used condom.