[allan87]

Or is there some other way I can access the file system, besides SSH?

With a computer (or virtual machine) that can read/write to a device formatted as ext4. I think only linux does this natively, but there may be software that will enable ext4 in another OS. You can also just rebuild your SD card, which ever way you built it in the first place. You will lose your settings (but sometimes a clean start takes care of other nagging issues that you have been unable to resolve)