Not to get off-topic, but to me, this was one of Yeung Gor's finest moments. Yeung Gor knew that he was dying, and the time left he had with his beloved Little Dragon Girl was measurable in days. Even so, he chose to give up what little time he had left to save the lives of the Mo Brothers...two people who hadn't exactly been kind to him. Although I've never been much of a Yeung Gor fan, this (along with his decision to spare Gwok Fu her arm) was one of his most heroic, most admirable moments when his heroism truly came through.
And as it turned out, his benevolence had unintended good consequences for him.