"Nevermind" is incendiary, one of my favorite albums. You're right, too... Sharkey expressed, in his own tasteful way, how unappealing life after the third album is.
Their last recording, "Ready 2 Fight", falls under parody in a way; a 15-minute sludge cover of a song by the band they were opening for. Still slays, though.
John now spends his time cleaning baby shit and blogging about baseball from Australia:
http://bigsharkeyshow.blogspot.com/
Edit: totally didn't see how old this post was. Fuck.