The one difference is this guy was almost murdered not too long ago, and had his entire dream and what he thought was his future taken away from him. Drugs and guns seems like a reasonable human response to this. Drugs as pain management (mental and physical) and the guns for self defense but realistically as a way to feel safe.
Obviously though, this is not a healthy way to deal with the situation. I think the response here should be to get him help. But yeah, he probably shouldn't be coaching for a few months until this is resolved.