It's not lead mute, lead mute is a totally different grab and is only referred to as "lead" or "opposite" relative to the direction of the spin. For example, if I grab mute left hand to right ski, but spin left, that'd be lead or opposite mute. Mostly, kids do lead mute when they're spinning unnatty. Mute grabs are always opposite hand to opposite ski, or reaching across your body.
OP is asking about when Tom grabs same hand, same ski in the traditional mute spot in front of the binding, or sometimes higher up towards the nose, and tweaks it inward, exactly like half of an octograb. Where did rip2dank come from? I personally like hafto.
What's the grab that Sammy and others do where they grab high safety and kick the same leg out? I think I've heard "bro kang" before, but I don't know...Love that grab, wish it was done more often.
Having fun at skiing's expense since '09.