I'm not sure why remapping the xbox one controller (I don't own one to try) caused the procedure and all controls to block, but you can reset the mappings by accessing the Data\Profiles folder by removing the file called "last".
This way the game will reload the input screen when you start and you should be able to retry.
I ran some checks and found out a bug: If you immediately remap your controls during the first ever controls set up the controls menu freezes (it's a problem that doesn't happen if you come back to the mapping menu a second time from the title screen because a "last" profile file was already created) so this bug might be the reason of your problem.