If you used Turbo Tax last year you should start a brand new account for yourself and not transfer from last year. You can not remove a spouse, especially if they are the first one listed on your return. Online is only good for 1 return. But you can use the same email address for 5 accounts. Start another Online return here. Sign up and start a new account.
https://turbotax.intuit.com/personal-taxes/online
Getting Divorced article
https://turbotax.intuit.com/tax-tips/marriage/getting-divorced/L20NC66cf
Video tips for Divorced couples
https://turbotax.intuit.com/tax-tips/marriage/video-tax-tips-for-divorced-couples/L8YqvF7p5
