well at first i was just like 'what the hell just happened? o.o', second time 'thats not funny...' and the third i was like 'yeah ok.. that is pretty funny.. screw it ill walk..'.
it only happened with that one location, i cant remember where it was though. its one of the camps involved with the stormcloak questline, northwest area somewhere..
ive never had the 'person standing next to himself' glitch though, does it effect the gameplay much?