This sounds like a ripoff of the french movie THEY CAME BACk, which was about people coming back from the dead, nobody was decomposed, and people tried to leave normal lives, even if they were really, really numb. It was kind of a serious realistic take on how people would freak the fuck out if your dead loved ones suddenly re-appeared in front of the house one day. I think I reviewed that movie here.
The 'zombies` arent violent at all, they are fairly normal, just freaking the fuck out too by trying to cope with what the fuck happened. It was interesting, somehow, but very french-ish artsy.
oh and it didnt sound as retarded as it does in my explaination