Here are a few things to try
1) double check that you really uninstalled launchy. You can get a list of all the installed packages with
adb shell pm list packages -f
if you downloaded any other launcher, that should also be removed.
2) try to bring up the home card with the following adb command:
adb shell am start -n com.google.glass.home/.timeline.MainTimelineActivity
If you can get that far, maybe you'll be able to connect to wifi and do a factory reset that way
3) use the third link you posted under related resources to get instructions on how to do a factory reset from fastboot.