... grab a grease bottle in the Ironhand gnomes cave in Rivington.
The room with Tulla had some rotten barrels that were white. (Contrary to all the red containers in the cave) So I looked into the first one, and found some grease bottles. Took them, no prob.
The second barrel, also white, also contained 2 grease bottles. I took them and all the gnomes became hostile and attacked immediately. Not even a choice to put them back or persuade them it was a mistake. No turning back. Had to kill them all. Including Wulbren and Barkus. All we did for him counted for nothing anymore, compared to a couple of grease bottles.
Ha! I know what that's like!
Not sure what platform you're on, but it is sooo much worse in there specifically to use a controller for movement! Several times I've aggroed them while trying to talk to one of them, but they move the split-second I click and ended up stealing instead!
It's one of the few places in the game I use click-based movement instead of the analog stick...
