If you are using the TurboTax Desktop (CD/download) platform, the info you've entered goes directly to IRS servers. The same thing is true of the state returns. The only copies of your returns are on the computer on which your returns are prepared or any other device you've saved them to.
TurboTax has no record of your data entry nor access to your tax return.
You can, of course, always opt to file all returns by mail to avoid electronic transmission of information.
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***
