Is this something I have any chance of winning? There's an email address on the ticket, but I imagine it's a throwaway. He came into the chat asking "did you read my email?" so I'll have his IP address logged too. How illegal is what he did? He ended up saying sorry after all. That makes it all better. Right?
You cannot win anything, as it is with criminal prosecution. He can face jail time for trying to extort you. I think I'd chuckle and let it slide too (I'm lazy), but he might do this to someone else who's more gullible then you in the future too. Blackmail is despicable ...