A number of sources are reporting that Guttermouth singer Mark Adkins engaged in an altercation with a woman during a show in Ft. Collins, Colorado. According to a report received by Jaded Punk:
Apparently guy from Guttermouth was completely shitfaced drunk and starts off his set by insulting the crowd and then decks some girl in the pit, she fights back, security jumps in and separates them, Guttermouth guy falls into pit where the crowd beats the crap out of him.
Videos don't exactly confirm the story, leaving things ambiguous but neither the band nor any other source has provided any further details.