I'd be surprised if you did that just turning the engine by hand. You would have had to put a lot of force on it after the bind to strip off those teeth. Any possibility it was already like that and you just found it when you were turning the engine?
I kind of forced it, should have kept an eye on the chain.
Congrats on finally being able to enjoy the Miata Alex, that sure was a loooong wait looks like it was worth it.