Postby Ghostface_Craven » Fri Mar 29, 2013 3:14 pm
A good thing to remember is that Phil knocks on the cubical before going on to the next one. It would have been way too obvious for the audience to have one of the Ghostface at the urinals to follow him just to sneak under a locked stall. It would have made no sense. As Tim has said the killer could have peeped over or even looked between the cracks and saw it was Phil passing by.