RTFA: http://www.wndu.com/home/headlines/10210306.html

The St. Joseph Prosecutor’s Office will present evidence to a Grand Jury forinvestigation regarding all parties involved in the physical incident from the Roseland council meeting on September 14, 2007.

The incident in question was the altercation between David Snyder and Marshal Jack Tiller.
The Grand Jury will convene on December 17th and evidence will be presented starting the next day.
WNDU has been informed that a subpoena will be issued for the footage aired on NewsCenter16 and WNDU.com.

That darn footage keeps coming up… Fortunately, we have a fair use version of the attack linked right here: