Well the no Destiel thing immediately takes out the vast majority of such fics I have and, unfortunately, the best ones. But some that remain are:

For Each Man Kills the Thing He Loves (http://archiveofourown.org/works/627052): "You're too late, buddy."
"Why's that?"
"Because, Azazel," Gabriel drawls, "Dean here sold his soul a long, long time ago."
Gabriel is a demon who doesn't want the Apocalypse to play out.

The Consequences of Prophesy (http://immortal-jedi.livejournal.com/139260.html): The Winchester household is attacked on June 21, 1983 by Hunters. Sam and Dean grow up among the Hunted, and have little love for Hunters, who think Sam will end the world. Haven’t the Hunters ever heard of self fulfilling prophecies?


Also, can you link to the 2 fics you mentioned?