I love to beat a dead horse. So here's another WHH tidbit for you: Faraday knew he wasn't going to detonate Jughead.
Everything he did was to influence Jack and Co. to do what they were supposed to do. The strong evidence for this is the fact he left detailed instructions in his journal "on how to remove the plutonium core" so it would not be necessary to lug a twenty ton bomb across the Island. Why would he do this if he was going to lead the charge to detonate Jughead himself? He no longer had memory problems - coming to the Island took care of that. If he didn't leave the instructions to remind himself, what did he leave them for?
(Two posts in one night. Been a minute!)