Same over here. My installed mod includes Warzones + AA, Sands of Time, ETAC, TPOS, Immersive Wench, and Populated Skyrim.
I know my save is "clean" (as in no uninstalled mod) because when playing Skyrim, you can save & load anytime and it won't CTD. Ok, maybe you can force the crash if you save & load really quickly, but for regular playing, it just does not happen.
The CTD happened after you load for the first time (no CTD), then quit Skyrim, and then play again. Any save this time will have 90% chance CTD, even starting a new game.
The way you can get to play again is: reboot (100% no CTD), disable mod (50% CTD), or, get this, add mod (50% CTD). But after disabling/adding mod playing and then quitting, the next attempt to load any save/new game will be back to 90% CTD.
