Bush was sidelined in 2005 when Anthrax reunited with Belladonna for an anniversary tour. When that collapsed, and relationships disintegrated with next frontman Dan Nelson, he returned for a time before Belladonna took the job back in 2010.

He's previously discussed his disappointment over the loss of communication with his former colleagues. Now he says of the anniversary split: "I think it could have been handled a bit better. The manager created a kind of wedge. If those guys said, 'We're considering a reunion tour - it's the right time,' I would have said, 'I understand.'

"The rumors were already circulating, people were asking questions and those guys were trying to deny it. We were doing interviews together and I knew."