Board Thread:Speculation House/@comment-11481298-20130705112654/@comment-3387274-20130708114708

That's no phase. Look closely at the broken bit. If you extend the arc of the whole side to make a full circle, the fragments are outside of that circle. Whatever's happening, if those are bits of the moon it's falling to pieces.

Under the circumstances, I'm inclined to assume that moonslice does indeed refer to that finishing move, but there is almost certainly something up with the moon anyway...