[Milhouse]

You don't need to do any of that as your system is not "corrupt" - all that is happening is Kodi is crashing, possibly because of an add-on or Settings library conflict. You should still have network access, and ssh so long as you didn't leave it disabled (which you should never do when using a test build). What would be nice is for you to upload your crashlog to a pastebin site and post the link (failing that, upload the latest zip from your samba Logfiles folder and paste a link) so that we might be able to fix whatever the issue is.

You can down downgrade by copying a tar file into the samba Update folder and rebooting.