@LBryant are you using the H2 database or MySQL?
One is harder than the other, if mysql, stop mango, make a fresh mango database setting then copy the password from the user generated in the new db and overwrite the password on your user in the original, that will set it to admin. Change back to your old db settings and log in.
If H2, stop mango, rename database folder and restart, this will cause mango to generate a new h2 db. Stop mango and use the h2 web utility supplied in the mango/bin directory to access the new database, obtain the password from the admin user.
Close then repeat with the old database and update the password.
Rename database folder and restore the original folder back to database again.
Log in with admin password
Fox