OK I honestly don't have the energy to go through this entire thread again tonight, so I won't be able to go into too much analysis. I actually did think rust was the real cop, mainly because of Two's claim that LS told him he was sane, which is something I didn't think LS would confirm (again, I've only been skimming).
So then I receive my PM, and oh look, I'm a cop.
The only scenario in my mind that LS would include 2 cops is if one was insane, and if this was the case LS never would have divulged that info. So I'm pretty sure I'm voting for rust, but I'll leave it til tomorrow when maybe I can get a readthrough in.