It should complete by itself. Has the progress changed at all?

If not, then I think you are in trouble. I'd backup the database, or copy out all data/schema and my guess is you will need to drop it and recreate it. If it's stuck in "2", not sure what a backup will look like. You can run the backup, then open it up in a hex editor (like xvi32). If anything after the first couple times you scroll down looks random, it's encrypted.

However, if you can access the database with SSMS and a query window, you ought to be able to bcp the data out. I would not restart this server until I'd BCP'd out all the data and scripted the schema.

As I mentioned, encryption is serious business. You might need to call a consultant or MS to help you straighten this out if you're stuck. If you want recommendations, I can provide some, but it will cost $$.