Well, IDK, but my understanding was that it was newly synthesized and the GPC was going to be used to get information about the mix in the pot. The syringe was being carried along with some others, down a hall to the analytical lab when someone ran into the person carrying the tray. One of the syringes pricked him.
The needles were pointing outward with the barrels in the tray for stability IIRC. IDK why they didn't use a bigger tray for safety. They were apparently using a small glass EP tray.
The story travelled fast among the grad students all over the city at all 3 major Universities.