Okay I finally got ahold of someone amazing (Regina) at TurboTax who helped me out, so I'll share what she showed me.
1. On the left navigation bar, click Tax Tools
2. Click Tools in the sub-menu
3. In the modal that comes up, under Other helpful links... click Delete a form
4. You'll be able to see all the forms you've completed so far. Delete all the ones related to 2210.
At this point, I didn't care about annualizing and reducing my penalty, so I went forward with the default penalty.
Good luck to all who have this problem. Hopefully this helps! And if it does, shoot a note to TurboTax thanking Regina.
