But when Vin burns Malatium, she sees a TERRIS PACKMAN, when looking at the Lord Ruler, meaning he is Rashek. Sazed alos mentions the language they speak now is originally similar to Terris, if Alendi was the lord ruler he would have used Khlennium, we know Rashek was instructed to kill Alendi. I think it would be too much of a twist, for one of the biggest twists in book one to be false, also, Alendi isn't a feruchemist, the lord ruler is.
As for Coof, welcome, and when we were discussing Alendi as the Hero of Ages, we're talking about him being the OLD hero. We don't know when these bumps are written, thus they could be written by him. I doubt this since the bumps in book one are written by him. Andrew, yes Rashek thinks he is the hero, but for the hundredth time, to him that wouldn't be a bad thing! So he wouldn't say unfortunately. I agree the Lord Ruler thing works with the whole clinical look at the world, and who knows lots about allomancy and feruchemy and hemalurgy, but he would not say unfortunately. Based on this I think the mist Spirit is my next guess.