No Boot Partitions on Clover Bootloader

And so I messed up - while playing around with some of the GUI and theming options on Clover Configurator, I've accidentally left the "Custom" switch selected with no other checkboxes checked(as opposed to "Auto=Yes") on the "Scan" section.

After restarting my computer, I'm left with a bootloader screen without any partitions to boot into! Am I screwed or is there another way around this, allowing me to boot back into High Sierra to fix this?

Author: @snikrs