More analogies if people want them to help explain:
Just because you run the software at the bank, you can't zero a balance. You can close the account, hand over the funds and not do business, but you can't zero the account - or worse, transfer the funds to an anonymous 3rd party you invented last week.
It'll be fun to watch Sun walk into court claiming he stole people's money because they didn't give him and his friends a gift a few weeks earlier.
He must be thick as shit if he truly believes that they had tokens stolen. Going to the FBI? Go ahead you dumb shit. They'll laugh you out of the building.