For example, robbery is when, with intent to commit theft, you take property by force.
Anything else is not robbery.
Theft by taking is: when a person unlawfully takes or, being in lawful possession thereof, unlawfully appropriates any property of another with the intention of depriving him of the property, regardless of the manner in which property is taken or appropriated.
(The above is georgia, robbery/theft/etc are state crimes so defintions vary a bit)
Again, it requires doing so unlawfully (or converting unlawfully).
If doing what this person did isn't unlawful in the real world, it's not theft, it's not robbery, it's not anything.
So you have to find a crime that actually matches what happened.
It's not wire fraud - that would require " false statement, promise, or misrepresentation in order obtain money or something of value from someone else."
etc
So what crime do you believe this actually is?
(So far i've only seen a civil lawsuit, and while there is a warrant for his arrest, that's for refusing to move the tokens to a neutral third party, or show up to court :P )