I agree, you can't get MRSA from a deceased body. The formaldehyde used to embalm the body kills anything in/on the body. Also the body no longer is a nice warm environment that germs and viruses like to live.
No, you can't get MRSA from going to a funeral of a person who died from the illness. The infection is passed by physical contact of the blood to an open wound you may have (blood to blood contact). MRSA is not airborne. On top of that, he will be in a casket and has been preped for the cemetary.