It sounds mostly like the downsides and frusturation of fame, which is pretty much hinted at in the "big big monaaay!" intro. "Why are we here again?" seems to imply that he's asking why they came famous in the first place. The lines in which he said "I nearly snapped my twig" is obviously saying he almost went insane, and saying he almost 'snapped a few of you' probably means that he was very close to lashing out on his own bandmates. What he's probably saying by being "so close" to is being very close to either leaving the band or leaving the record label. Just my interpetation.
It sounds mostly like the downsides and frusturation of fame, which is pretty much hinted at in the "big big monaaay!" intro. "Why are we here again?" seems to imply that he's asking why they came famous in the first place. The lines in which he said "I nearly snapped my twig" is obviously saying he almost went insane, and saying he almost 'snapped a few of you' probably means that he was very close to lashing out on his own bandmates. What he's probably saying by being "so close" to is being very close to either leaving the band or leaving the record label. Just my interpetation.