I also thought Taim might be Demandred, because when Rand thought about snuffing Sammy, Lewis Therin said, 'oh yes, but first Demandred, then Sammael.' This is the only other Forsaken that LTT implied knowing where/how to get his hands on. Only one problem. in the Epilogue of LOC Demandred kneels before the Dark Dude and says, 'have I not done well?' but, at the start of ACOS Perrin thinks to himself that Min is staying closer to Rand than even Taim. Unless RJ is skipping ahead, Taim simply does not have time for a jaunt to Shayol Ghul. Also, He could not be Osangar because like Mosleth said, the one in a man's body is a woman, so she can use the female half undetected just like Halima is a man in a woman's body using the Male half. And Rand can sense Taim using The Source. I do think Logain will get his hands on Callindor, and RJ is setting us up for Moiraine coming back stilled by having Nynaeve learn how to heal that. She might be weak, but Rand will give her the Female Statue Thing so she'll be mighty once more. And what exactly is the Tamyrlin anyways? I dont' think I've come across that or if i did i was too stoned to register it.