It seems potentially possible given what we do know. But I’d remain suspicious because in Janurary we barely knew anything apart from the fact that the next big bad was the WWW
If the spoiler is true, then it couldn’t have been posted by a typical viewer of the show. If someone knew the name of Wicked Witch back in January, then I’d guess this person has at least seen episode 3×12. Assuming it’s true, then that raises a few questions. (1) If Walsh is really a flying monkey, how does he change into a human form? (2) Why does Zelena need a drop of Emma’s blood– because Emma is the savior or for blood magic? (3) Who is Zelena’s father? (4) Why did Rumple, rather than Cora, teach Zelena magic?
"That’s how you know you’ve really got a home. When you leave it, there’s this feeling that you can’t shake. You just miss it." Neal Cassidy