I'm not sure how long this has been going on, but for some reason I am unable to go back to Goodsprings or some of the surrounding area of land because anytime I get too close, my head explodes. At first I thought it might have been because I had recently done the intro quest for the Brotherhood of Steel, but the "Explosive Collar" was removed from my inventory at the end of that quest, and so far the only place my head explodes is near Goodsprings.
Anybody have any idea why this is happening?
PS - I finished the quest against the powder gangers a while ago, so I'm not sure if I need to go back to Goodsprings, but any help would be appreciated.