so I'm trying to start Blood on the Ice. I'm entering Windhelm for the second time and I find the murder scene in the graveyard, with all 3 witnesses standing around... but no guard to initiate the quest. He is spawning in the Skyrim worldspace, as http://cloud.steampowered.com/ugc/596988571411267216/3FCB86324198E9D01865E36F4B361FF5ACF381C4/. I've tried fast traveling away then back again but he keeps showing up there. What console command can be used to relocate him into Windhelm proper?

I'm using the latest Unofficial patches, along with a small number of other mods, but apparently this one has slipped through!

Edit: http://www.uesp.net/wiki/Skyrim:Blood_on_the_Ice is the quest in question.