I was actually relieved when the guy's grandfather told me today "If you let him out of the hospital today, I guarantee he will be dead by tonight!" The last 72 family members who have said that to me have been wrong. I used to go cold with fear when I heard that, wondering whether we had seriously misjudged the patient's dangerousness, and shuddering to imagine the hospital's liability problem in that situation. But somehow, those are not the patients who do kill themselves. I'm not sure why - perhaps it is something of a family style of high drama that doesn't mean anything. I'm just guessing.
Not to entirely make light of it - I'm sure these family members are not just trying to manipulate us, but are deeply concerned when they say this - but it is reminiscent of my theory on hitting squirrels with your car.