He tells I Heart Guitar: "We were out on the road with Mudvayne and Static-X and we were having a blast on that thing. Next thing you know, I'm hanging out and my leg's frickin' killing me - my left leg behind my knee. I figured maybe I'd pulled a calf muscle but it wasn't like I fell or anything. It wasn't like I was doing David Lee Rock splits off the drum riser.

"...We had a 24-hour drive and I said, 'Before we do this I just want to get an ultrasound.' The guy goes, 'Dude, you've got two huge blood clots behind your knee.'... He told me usually airline pilots get this s***, or truck drivers, you know? I said, 'Would drinking have anything to do with this?' He just goes, 'No, dude, if anything drinking was thinning your blood.'

"I said, 'Well, good - alcohol is a good thing', but my wife says, 'You're dreaming, buddy-boy. The bar's closed for you, jackass!'" - more on this story