I've got drunk Torvar from the Companions as a follower and when we're outside on the road, he keeps randomly pulling out his sword and then instantly vanishes out of existence... for ever! To be clear, I have NOT lost him. He pulls out his sword and vanishes when I'm looking right at him until I re-load a save.

What the heck man...

For what its worth, I have him equipped with Shield of Ysgramor, Dawnguard light armor, a Stormcloak Officers helmet, and a Nord Hero Blade. I'm also running with an armored troll. (360)

I checked the wiki but couldn't find any related bugs.

Anyone have any ideas. (PS, the question mark on my laptop is busted, so thats why theres no question marks)

Did he curse Talos?

You're either drinking too much, or he's mixing invisibility potions into his mead...