Dont forget to play around with grub while its like this. Tab completion works great, try '(' the press tab to maybe see your disks as grub sees them. I think help lists commands and most of them are harmless.
The process for this is that you want to set your prefix to the /boot partition in the (hd1, gpt1) syntax (use ls) and then load the "normal" module. From then on, you should have regular GRUB again and should be able to boot your OS to properly fix GRUB.
Sounds like you'd love configuring network hardware then! You can get a peek into that in Linux with frr since it has a mode to configure your linux machine like you've just SSHed into a Catalyst switch, or just hop on ebay and buy a 20 year old switch for peanuts