If there was no written agreement in any respect then it is just one dudes word against the other. It would be hard to claim that on one hand the guy that wrot

If there was no written agreement in any respect then it is just one dudes word against the other. It would be hard to claim that on one hand the guy that wrote the code isn't owed anything in terms of money or equity and on the other hand the code which was his work doesn't belong to him.