I'd need to know a bit more about your relationship with your uncle, but on the surface, the hands are a symbol of work, artistic creativity and nurturing. His being buried with his hands sticking out and no one thinking much about it tell me that if he were gone, he would be leaving something important behind - something that he expects you to finish or at least maintain. If his hands are sticking up as well as out, this could symbolize him giving you a blessing. The position of the hands in the dream are the best indicator of the meaning. What kinds of feelings did this bring up for you?
