[Updated 1 Time]
I have just received a PDF from the Homeland Security Digital Library, entitled "The Response To the 2011 Joplin, Missouri, Tornado; Lessons Learned Study". This is a evaluation of the local, regional, state, and federal response to the EF-5 tornado and its aftermath. The document is unclassified and is redistributable.
I have not had a chance to go through this completely yet, so we'll read it together. Take careful note of item 2.3 in Preliminary FIndings, "The thousands of mutual aid responders and volunteers who self-dispatched to Joplin immediately after the tornado enabled Joplin to conduct response operations, but presented challenges for incident management." This is one of the main reasons for the formation of the Auxiliary is to better organize some categories of volunteer response and to provide leadership in the field for self-dispatched volunteers. Some of the LCSA's founders saw first-hand what a small but significant amount of leadership, organization, and local knowledge at the Joplin Family Worship Center was able to accomplish.
Largely, the report appears positive, with items such as "2.1: Regional capabilities enabled emergency responders to meet the needs of survivors immediately after the Joplin tornado." There are details of significant shortfalls identified which we need to  be examined by local and regional responders. It is also apparent that some problems, such as those caused by the presidential visit, are not acknowledged but will likely have to be dealt with by responders at major disasters in the future and should be discussed.
Stay tuned for further updates.
Update 19 July:
A copy of the PDF has been uploaded with my highlights and mark-up. More commentary coming.