I'm playing my way through the LGNPC Redoran mod. I made the mistake of exploring the Morag Tong guildhall and asked the guildmaster there about Toris Saren. He gave me a quest and a writ to kill him without me ever joining the Morag Tong (I asked him about joining and said 'no thanks'). Toris Saren is a Redoran NPC who I can't kill, and need to talk to to finish a quest.
When I go into his house, he attacks me, as he thinks I'm an assassin. I tried using the console to kill him, turn in the quest, and resurrect him, but he's still hostile.
Is there a way I can remove this quest and make him not hostile? I can't even talk to him because of this quest.