My sim drank the ghost goo and is now stuck as a ghost?!

There has to be a solution. My poor sim is a ghost too now. Has been for more than 24 sim hours. I haven't done all of the testingcheat stuffs liste above but read up through that they don't work anyway so I need something that works. My poor guy looks rediculous now. After first I was like oh this is cool! Then, okay... Now, okay this is annoying.

Please help.