Disproving Odin - An Experiment in arguing with a theist with Theist logic

[SteveII]

That's your example! It is not metaphysically possible for God to use a donkey to send a message to its obstinate owner? Perhaps the donkey spoke or perhaps Balaam just heard the wise-ass speak. Neither is metaphysically impossible. 

What does metaphysical even mean?

It's a bullshit term that has no bearing or relevance to reality.

A natural donkey is physically unable to speak. Arguing anything else is just an academic method of make-believe.

Metaphysics is a branch of philosophy exploring the fundamental questions, including the nature of concepts like being, existence, and reality.[1] It has two branches – cosmology and ontology. Traditional metaphysics seeks to answer, in a "suitably abstract and fully general manner", the questions:[2]

1. What is there?
2. And what is it like?
https://en.wikipedia.org/wiki/Metaphysics
It is entirely possible that if there is a God, such things can happen. In fact, if there is a God, you could even expect interaction. Since any interaction would be necessarily non-natural (supernatural), complaining that it is is just a tautology.