A quick update to this: I ended up restoring a backup from last week. This time I have not bothered with a sys-usb so hopefully my keyboard and mouse won't get locked out again.
The only problem now is that my usb printer/scanner is no longer detected. -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/16f955be-38c5-4a90-87a9-8968ab073f62%40googlegroups.com.