Spectres... I almost screwed myself over :P

So I made a mission for my terran party to help a nerazim scholar infiltrate a tal'darim controlled temple looking for some ancient protoss stuff (like stories and history and such) and in return they could take a sample of terrazine that their bosses wanted. Well one of my players is a ghost and he knows what terrazine does in the video game and I was terrified he would try to use it to become a spectre. xD luckily he didn't because I dont want to be the one to have to write up how that works >.<