http://www.chartattack.com/damn/2007/07/2706.cfm also if you want a shorter version go here http://ultimate-guitar.com/news/gen...son_behind_guitarists_departure_revealed.html
Pretty much what I already assumed. I've always been fascinated by Sum41 because of their uniqueness and ability to mix metal with punk and make it sound really good. Although one thing I didn't realize is how unenthused he was even during the Chuck cycle which seemed to be influenced by him the most.
And Chuck was two billion times better than Underclass Hero. One of the biggest disappointments of the year.