Poof, and the charge is gone. Mattson was the "bad" guy in this incident.
"Two other men aside from Mattson were initially charged with accountability for the assault, although the Missoula County Attorney's chief criminal prosecutor, Matt Jennings, told the Missoulian on Wednesday that new evidence did not support those charges. The county attorney's office filed a motion to dismiss those cases Wednesday, Jennings said."
https://missoulian.com/news/local/crime-and-courts/body-slam-lands-missoula-man-with-felony-assault-charge/article_d44f2432-4d05-526a-8fe1-0d3cbcccefc8.html