“If this interpretation is incorrect or the guy actually does have commitment issues then my accusers are guilty of Motzie Shem Ra.”
Meno: “I doubt that’s true.
I don’t know the halachos very well, but I can imagine that if you just make up a story about someone, that’s motzi shem ra, even if by chance the story turns out to be true.”
http://www.theyeshivaworld.com/coffeeroom/topic/hilchos-shmiras-haloshon#post-631923