Megadeth was scheduled to appear on Motörhead's Motörboat cruise in late September, but withdrew because of Mustaine's complications following his cervical spine surgery. In late November, Drover quit the band after ten years, wanting to pursue his own musical interests. This was quickly followed by the departure of Broderick, due to artistic and musical differences. Ellefson denied rumors that Megadeth would disband, and said he and Mustaine would continue working on new music. Mustaine said that one of the reasons for Broderick's and Drover's departure was the frustration caused by Megadeth's fan base demanding a reunion with Friedman and Menza. Lamb of God drummer Chris Adler and guitarist Kiko Loureiro of Angra were brought in to perform on Megadeth's fifteenth studio album. In October 2015, Megadeth streamed "Fatal Illusion" off the album "Dystopia", which was released in January 2016. In support of "Dystopia", Megadeth embarked on a North American tour in February and March with Suicidal Tendencies, Children of Bodom and Havok (though Havok was soon removed from the tour by Megadeth's management following a dispute over a contract). Mustaine announced that Adler, who was performing with both Lamb of God and Megadeth, was no longer in the band due to scheduling conflicts between the two bands. He was replaced by Dirk Verbeuren from Soilwork, on Adler's recommendation. A second US tour took place in September and October, with support from Amon Amarth, Suicidal Tendencies, Metal Church, and Butcher Babies. Former drummer Menza died of a heart attack on May 21, 2016, while performing with OHM at a jazz club in Los Angeles. Asked about any further Big Four gigs, Mustaine called for "the powers-that-be" to help put together a new Big Four tour in 2017 as all the respective bands were promoting new albums. "Dystopia"'s title track won the Grammy Award for Best Metal Performance at the 2017 Grammy Awards, the band's first win after 12 nominations. Mustaine, Loureiro, Ellefson, and Verbeuren attended the ceremony; however, album drummer and award recipient Chris Adler did not. While accepting the award, the house band played Mustaine's former band Metallica's "Master of Puppets" causing some controversy among fans. The band joined with Scorpions for a co-headlining tour in the fall of 2017.