Hello J.C Hendrickson!
My name is Marco and I am an Independent Advisor. I will do my best to help you.
Apparently this update has several bugs. Sometimes it creates a temporary user account for you. In this case, you have to uninstall it awaiting a correction.
What I understand of your situation is that you can no longer enter Windows? That's right ?
Instead of rebooting, did you try to just shut the computer down completely and reopen it?
If nothing changes, yes you can do a system restore at an earlier date, if you have the option ...
or try to boot in safe mode to remove this update
https://support.microsoft.com/en-us/help/12376/windows-10-start-your-pc-in-safe-mode