For what it’s worth, I may have lucked out but I was able to recover without a reinstall by:
1. Boot to recovery mode
2. Open Terminal
3. Delete files I was trying to delete with rm
4. Reboot
The part where I may have lucked out was where the unrecovered space from deletions prior to step 1 were significantly more than the space I reclaimed this way. It’s entirely possible I could have just rebooted but I didn’t want to chance it, not knowing the failure modes I’d encounter.
1. Boot to recovery mode
2. Open Terminal
3. Delete files I was trying to delete with rm
4. Reboot
The part where I may have lucked out was where the unrecovered space from deletions prior to step 1 were significantly more than the space I reclaimed this way. It’s entirely possible I could have just rebooted but I didn’t want to chance it, not knowing the failure modes I’d encounter.