Why do you want to downgrade to Deluxe? The Desktop program can prepare unlimited returns and efile 5 for free. And you can use any version. All the desktop programs have the same forms. You just get more held in the higher versions.
But you can activate a second program. Under Help - Switch Product - Activate new product. Don't know what that will do or what benefit you will get. Don't think it will allow you to efile more than 5.
Then do you need a refund for Premier? You have 60 days to get a refund.
Turbo Tax Refund request form
How do I request a refund for my TurboTax product?
