Finally saw it! - The Cane and the Room.

[Carol]

md wrote:
> DD addresses the ring, holds up his hand to Harry and says something along the lines of "it wasn't easy to destroy." Then Harry touches the ring, has his Voldy Spasm (I'm certain they put that in there to show that the Harry
> / Voldy connection was still alive for DH. But the point of the scene is, DD is holding up his hand and obviously showing it to Harry as he states how difficult / dangerous it was to destroy.

Carol responds:
Not to be obstinate or anything, but the ring does not appear to be destroyed. We don't even see the stone. And a destroyed Horcrux could not or at least should not cause a "Voldy spasm." If the Horcrux soul bit is destroyed, there's nothing to connect with the soul bit in Harry.

Carol, who thought that the point of that scene was to tell DD, belatedly, that Harry's scar is a Horcrux (communicating with the as-yet undestroyed ring Horcrux)