Whew! I'm so glad it turned out ok. They did good to get on it as fast as they could, and lucked out finding it so quick. I'm sure a lesson was learned not only by this hunting party, but by others too. I just hope no one reads this and thinks they can get away with this too. Your brother was very, very lucky.
I don't know about the gps, but if nothing else, a guys gotta have a knife and some marking tape. With those relatively inexpensive tools, one can gut it, cool it, and relax a little.
I've gutted more than one animal with a broadhead cuz I'd left my pack in the rig and didn't have my knife (those quick little hunts that end up being not so quick...).
I'm glad he got his elk...