I hope Zay is OK. While drugs may certainly be one explanation, some of these actions are classic expressions of a schizophrenic disorder. I'm glad his brother was there to prevent a possible suicide.
On a side note, I think a large number of comments in this thread are utterly embarrassing. A person has gone through a traumatic near death experience, may be seriously ill, and is hospitalized and people here are mocking him incessantly. You guys have judged him and carried on with absurd comments without knowing anything about the situation. If you all will turn so fast on a player and person you were rooting for 24 hours ago, you should turn in your fraudulent Billsmafia cards. Embarrassing. I'm glad you guys don't represent most fans.
Here's to hoping it was something stupid like bad drugs and not a deeper underlying mental illness.
Sorry, it had to be said.