So, basically, you don't know how this works? You specifically asked him to prove a negative. You said, and I quote, "has he stopped these behaviors so an event from today doesn't pop up 6 months or a year from now?"
You are asking a ridiculous question that you won't accept any answer to. It's absurd and now you're stuck trying to explain it away. We haven't heard a single peep of anything he's done in over a year. By all accounts, he's busted his ass (as always), been a good teammate, and stayed relatively quiet (save for a funny commercial with Eli). All of a sudden, a video at least three years pops up, and you post some ridiculous question about "has he stopped these behaviors?" and you don't understand the fact that you're asking him to prove a negative.
It's absurd.