is that Dave Mustane?

yes, he wants your credit card info

I met him a few years back (well, more like 14 years ago) and he was cool as shit.

I gather that he's cooled his temper down significantly since the old days.

I guess so. I don't know what he was like in the old days, but I'm pretty sure he was a typical rock star lifestyle. He came into the place I worked at the time. And living in a small town, it was a shock to see. Me and one other guy were the only ones who knew who he was.