Do you guys know about this one?
https://www.nytimes.com/2019/11/14/arts/music/jim-sullivan.html?smtyp=cur&smid=tw-nytimesarts

I am. My assumption on this story would be a "death by misadventure". He went to walk in the desert, got lost, and died.

UFO is actually a pretty good album, I've listened to it more than a couple times. Had he lived there's a good chance he would have ended up as a known singer-songwriter.