Voice-Acted Mirmulnir?!?

[tov01]

The strangest thing just happened to me today. I was fighting Mirmulnir in my latest game, and he started talking! Given the rather poor quality of the voice acting, it must have been added with one of my mods, but I have no idea what mod added it. The only dragon-related mod I have is deadly dragons, and removing it did not remove the voice. Also, in case this is related, Mirmulnir body was very low quality until he died, at which point his body returned to normal. Has anyone else ever come across something like this?

Edit: Well, according to the Deadly Dragon's FAQ, it seems this is caused by the Skyrim Unofficial Patch. This is somewhat problematic, as the unofficial patch isn't something I can just get rid of.