So where are we supposed to have picked up that he stopped having treatment? When he checked out of the clinic? Surely if he was suffering from a mental illness - to the point where he would shoot somebody (even if it was accidental what he did leading up to it was hardly that actions of a well man) - he would have some follow up treatment (drugs, therapy). It is just laziness (from the writers) to say that because he had a history of mental illness that he will automatically go off the rails and that will be how he is written out. I don't like the character, but he should have been written out in a more original manner. Why is that if you have a mental illness in a soap it means you are completely psychotic - or in danger of flipping at any given time. How about Steven manages his mental illness with medication, and just moves away to college or something?