Normally, you're a real slick customer, but "Hey, here's this alt that knows some shit it wasn't around to witness" kinda doesn't make it too tough to know whose alt it is.
Pretty strong indicator it's Alti. "Mastersplither" brings up shit that only three people saw: Myself, Alti, and Jack. And if it was Jack, it'd be talking about dancing or people getting fucked in the neck. So it ain't Jack.