Captain Osbon was ill, not suicidal. He was a respected Check Airman that was working himself to exhaustion. He was locked out of the cockpit by an astute First Officer after he exited unexpectedly.
The charges were eventually dropped, as I recall. Sadly, I heard he's back to normal and hangs out at his local airport with his old flying buddies, but can't get his medical reinstated.
On my lanyard, I still wear the laminated American Flag Clayton made and was handing out to JetBlue crewmembers after 9-11. He was a good guy that got quite ill.