Let's hope he just "bugged out", rather than the alternative.
He seemed pretty reclusive at the best of times, based on the few back and forths I had with him. A rather eccentric fellow too. If my memory is accurate, he had like 50 subs in an apartment (back like 4 years ago). I felt clostrophobic just looking at the pictures of his room, and I can "almost" be confortable with cave-splunking