No, the train killed Terry. He put himself on those tracks. You know damned well he was always mentally ill, and mentally ill people make bad decisions like walking on train tracks. He was not bullied into it, he was not trolled into suicide. That's fragile people projecting their own frailty onto him. You have no idea what was going through his mind. For all we know, he could have thought in perfect clarity that death was preferable to being schizophrenic.