What's the big fascination with Mr. Stuart's health?
There's really nothing on the web (that I found - granted, I didn't spend that long looking), that alludes to why he has stopped officiating.
If you are that curious, go to the web and research it. Hire an investigator. Hunt him down! Call and/or email CBS Sports. Call ESPN! Go to his home of record. Invest money in SPOKEO and call em all (nah, don't do that).
There's much better ways to find out than this Forum......
(let the bashing begin.....)