I wonder who was training MYV...
I wouldn't be too quick to judge that Yoshiki (or whatever) guy. Who knows what happened before his outburst, right? Maybe that staff memeber spit in his coffee or slept with his sister! Or maybe *gasp* he played with his toys without asking. Besides, his anger about the music shows his passion for it. Without passion, you have no spark and without that, the music is doomed to failure.
Keeping in mind I have no idea who he is and I've never heard any of his work. Does he suck?