That silhouetted guy who used to command Silik was actually Archer from future.
If you can remember what he made Silik do, he also tried to stop Mankind from its deep space missions (once Enterprise shuttle by mistake destroyed a female-dominant race which triggered Vulcan rage; real culprits were Sulibans). At that time, temporal agents from 31st century helped mankind prove that they weren't guilty. At that time, I thought other factions of Temporal Cold War were behind this (possibly it was even mentioned in the show).
But, if that silhouetted guy was Archer from future, what was he going to gain from ruining mankind? It doesn't matter how much corrupt he became in the future, those things were going to limit himself (creating even paradox of him no longer able to project himself into past).