Although we think of rock bands as having no rules and leading a wild lifestyle (which is certainly true for many of them), that is not to say that there are no limits. Many musicians have been fired from their bands, and although sometimes this is due to creative differences, it is usually due to drugs and alcohol. Often the band is never the same, but in most cases, the musician has brought it on themselves by jeopardizing the band and consequently their bandmates’ careers. To get kicked out of a rock band you have to really screw up, and here are 20 famous examples.
20. Michael Anthony – Van Halen
In 1974, Eddie Van Halen, Alex Van Halen, David Lee Roth, and Michael Anthony dropped the name Mammoth and then later became known as Van Halen. They rose to fame and were one of the biggest bands on the planet, but tensions were running high and Roth left the band. He was replaced with Sammy Hagar, which took the band in a new direction but maintained their success. Then there was a conflict with Hagar, who quit in 1996. Michael Anthony later got the boot, reportedly due to him playing shows and spending time with Hagar after he departed. Making matters even more complicated, Hagar then re-united with the band in 2003 and insisted that Anthony was involved (he became a contracted but not full-time member). Once the tour concluded in 2005, Hagar and Anthony left the band once again and now barely speak to the Van Halens.
http://www.theweeklings.com/j-m-blaine/2015/10/05/monday-rock-city-a-conversation-with-greg-renoff-author-of-van-halen-rising-how-a-southern-california-backyard-party-band-saved-heavy-metal/ Source: Theweeklings.com