According to the rules, the testing would take place before the lab worker's vials. We voted to test the lab worker (UN), on the same night UN told FF he wanted to use one of his vials. Now, as *I* understand it, the vial would never have gotten used, because of the order of deaths, UN was dead by the time the vial usage would have come around. However, as FF stated, he felt bad for UN, so he made up this story about how UN actually set a trap to use the vial before he died, so even though the rules clearly state the order of deaths, he was able to use his "special power".
game off
This is exactly the kind of monkeying with "clearly stated" rules by GMs that caused me to stop playing these things in the first place. In this case its not much of an issue since the vial used was the babble and really had no effect on the outcome of the game, but on principle its still a load of BS in my opinion.
/game on.