Ok I only read the first couple comments on this thread, so sorry if I say something already said...
1. That was the default Facebook widget, right? Then yes it was a Motoblur widget, get over it.
2. If you downloaded Facebook for Android, then kill the Motoblur widget and get over it.
3. On that system dump where files were called Motoblur, they weren't, it was just "blur", so get over it.
4. Who cares if its got a skin on it, the skin is Verizons, the only motoblur stuff on it is widgets, so get over it!