i've seen this dude's icon before, i think he posts on hackforums (what a surprise)
well, not only was this 2 years ago but the email also isn't involved in any pastes. if the information from that xsplit leak was public, it would be in a paste. this means towel would've had to purchase access to the database of the leak. also, there's a chance theyre aware of this leak by now and had changed credentials and it has nothing to do with anything
But those aren't the real hack forums... those are a just a pawn.
From what I heard, the real ones are hidden and you can only access them by ip... you also need to be on a protected connection and have authorization , in other words the real ones are in the "deep web/dark web/under net" whatever you call it.
I can't even check since its really hard to even get access to the site, rumors are that the most infamous ones go there, to connect they actually use a really old technology that the military used to use for transferring information, but the modern military doesn't use such an old system anymore.
But since this guy seems to have planned this, I highly doubt he goes there, since only people who do intense stuff go there, compared to how anonymous leaked all the kool kids klub member's info, this guy is scrub and a "noob".