I'm not so sure about lynching SOV. He was very helpful in the beginning of the game, though it's possible he was converted. I would hate to lynch him when he's silenced though. It doesn't seem like anyone has any other leads, however. I feel like someone is sending random messages to confuse us. We never did figure out the whole nyanko-business that happened earlier.
Maybe the message senders are wolves who are trying to throw us off their trail? SOV would be a good suspect because he's been playing oddly, and we know there may have been a conversion earlier, so it would be stupid not to suspect him. However, we never really figured out this whole nyanko business, and I am inclined to think that Nyanko is not a wolf, and that the people implicating nyanko and SOV are wolves throwing out red herrings. If they both turn out to be wolves, that would totally suck. Maybe we should lynch one (sorry) to test the validity of the messages? If the one we lynch is a wolf, we can bet the other one is too because of the same process of mysterious message sending.