He might not have done anything; this puts him at a 71% SGR, which is a bit lower than mine, but it might just mean had a handful of people who closed their accounts, or maybe didn't like his overall channel when they visited. KGA, where are most of your subs leaving from? I can see that the majority of my losses come from channel visits, so I'm upgrading my banner very shortly to correct this. Several others closed accounts, and a couple left after watching some pretty funny vids. I guess those vids weren't what they had in mind, so they left. Would be interested to hear where most of your subs/losses come from!
Edit: I wrote this while you were posting about having 12 closed accounts apparently. Gotcha.