The incident was caught on camera at the band's show in Moline, Illinois last week
Drummer died on stage over the weekend
Menza, who was with the band for nearly 10 years, died unexpectedly at the weekend
Nick Menza was 51 years old
Mustaine has refused to endorse any presidential candidate this time around
The album, featuring a revised line up, is due January 22, 2016
Metal act reach lifetime total of 20 musicians, but maintain high expectations for new album
Unlikely collaboration took place on Jimmy Kimmel's chat show