I read this analysis of Drummer's talking with Ronnie in the hospital from golden forum. Quite interesting.
http://forum9.hkgolden.com/view.aspx?message=3428357
click to show/hide spoilers保怡在醫院同BunBun講個番話其實係同自己講
保怡本來後生已經自私底, 後來發生家明放題事件, 佢過唔到自己個關所以只係做幫人的事
而家佢同BunBun 講家明唔會番黎要放低 其實都同自己講, 應該放低呢件事向前望, 即係佢想自己放低件事做番自己
所以呢一Scene 之後保怡就黑化了
Translation:
click to show/hide spoilersThe speech Bowie gave to Kenny in the hospital, he's actually telling himself.
Bowie has always been a selfish person. After the Ka Ming incident, he cannot get pass himself, so, he get involved in a lot of activities that help people.
Now, he tell Kenny to put down the incident of Ka Ming, that Ka Ming won't return. He's actually telling himself, he need to put down this incident and look to the future, i.e. he need to put down the incident and become his true self again.
So, after that scene, before turn bad.