Unless the damages are more than >£1000, there is almost no point - if they're in the same country. As they're in a different country, no point at all. No court will want to extradite someone for you to sue them over a block game.
http://findlaw.co.uk/law/dispute_re...tionals-sue-or-be-sued-through-uk-courts.html If the machine belongs to you, and you have proof that it does along with the proof of dev deleting server. This happened to me several times when I was hosting servers, I would suggest that you start backing up regularly and get over this one :/
1. Imagine the court's reaction. 2. You shouldn't trust people online that quickly. 3. You shouldn't trust people at all. 4. Start backing up more regularly as @ImperialSwag offered.
You can take it as a learning experience. Take backups, and be careful on which people you trust to access your server(s).
It's time to redo everything... @AshyzBoyz In fact in light of this occasion I'm going to back up my Network right now! (Even though no one has root access but still. you cant be too safe :3)
I'd try to ask the Hosting Company to do a rollback but I highly doubt they'll do anything. Give it a shot anyway.
If they're not made by the dev then he can download the resource again. Again if the they're from the dev then EOL.