[Nemesis]

Your example of Orpheus' death isn't from the Hellinic version but from Ovid's Metamorphoses.
In Aeschylus' lost play quoted by Eratosthenes, we find that the Dionysus in order to punish Orpheus for regarding Apollo as the Sun god sent the Meaneds to kill him.

But in either version we find no account of him being eaten, just killed.

* sparagmos (“tearing to pieces”): In these trances they caught snakes and small animals and dismembered them with their bare hands. This vase painting shows Dionysus himself participating in the ritual.
* omophagia (“eating raw flesh”): By eating the bloody flesh of these animals, the worshippers became one with the god and with the wild natural forces that he represented.

Not sure what this proves. You probably didn't notice that you mention in your post.

caught snakes and small animals

and

By eating the bloody flesh of these animals

So again there is no reference to eating humans.
Even if we look at Euripides' Bacchae again, we find that Dionysus actually tricks the Maenads into eating Pentheus out of revenge. Which is the tragic part of the whole play, since one of the Maenads, Agave, was his mother.

Just a question, why do you say "Hellinic" and "Hellin"? Is that the correct pronouciation/spelling for the most common "Hellenic"?

I know that most spell it Hellenic, but it I find Hell(i)nic the correct "form", since the Η (hetta) in ΕΛΛ(Η)ΝΙΚΟΣ gives the (I) sound we find in the word "in". Not really sure if that's how it's pronounced when written Hellenic, I always believed it would sound like the "e" in "lend"