I was inside Olav's pub for an unrelated quest when I met Gorm, a Nord I had met on an earlier quest. He cried when we talked. He then went crazy and started killing people. Unfortunately, he only targeted merchants and ended up killing two of them (Northern Goods and some other shop). Was this a bug or does Gorm become hostile for no reason? Shall I load an older save? Shall I miss these merchants? Can I do anytbing to prevent Gorm from getting mad?