MN--Why resignation? Why not removal?

Finally, more than a year and a half after the breaking of the story of widespread abuse and cover up in the St. Paul/Minneapolis Diocese, Archbishop John Neinstedt has finally resigned. This is a tiny but belated step forward.
After centuries of abuse and cover up done in secrecy, and decades of abuse and cover up done somewhat in public, evidently one pope has finally seen fit to oust one archbishop for complicity in clergy sex crimes. That's encouraging. But it's only a very tiny drop of reform in an enormous bucket of horror.

http://www.snapnetwork.org/mn_why_resignation_why_not_removal