this question is about ps3 version of the game but i thought the PC master race would do a better job at answering my problem

long story short I deleted hearthfire, I reinstalled it. I had to find my husband at his original point of origin. He didn't have any spouse options, I killed him. Now, I cant find another amulet of Maras

if you killed him your screwed, you can only marry once

you are screwed. you shouldn't have uninstalled the dlc and continued playing, removing any content is not supported by the game as every information is stored in your save files, also you can not marry more than guy or girl. roll back to earlier save where you didn't uninstalled the dlc you will loose some game hours though but its better than starting a new game.