sentences:  At O'Hare's personal request, the full reasons for his departure from the show were kept secret until after his death in 2012.The following year, Straczynski revealed that O'Hare struggled with delusions and paranoia due to mental illness, which ultimately prevented him from continuing to act.However, Straczynski emphasized that O'Hare's fans, particularly those of his role as Sinclair, had helped him cope with his struggle in ways medication never could.