They're gone for good, sorry. You could spend hundreds/thousands of dollars to hire a lawyer who could file a motion for a subpoena. If the judge were to grant his motion, then VZW would be compelled to try to recover the data -- doubtful. It's up to you whether you want to spend the time and money.
Web storage is a great resource, but the lesson here is to always make backups of anything irreplaceable on media like CDs or DVDs, which themselves are not permanent. However, the more backups you have via different media, the safer the data is from loss.
I don't think it is even worth to spend that much money.