You're welcome, chowhound!
IMO, there is no "truth" about this scene, just like so many other scenes.
Annie P wrote the story including so much ambiguity, and the film reflects it.
If someone knows the truth, it's Annie. Unless she told Ang what she actually intended with that scene,
he doesn't know it either. He may have his own interpretation, but it isn't any "truer" than any interpretation we
all might have. If the scene was made like Anne explains, with two different takes on it, I think Ang's intention was exactly that: to leave us with the ambiguity. Because there is no truth. It is, after all, fiction, and therefore noone knows what really happened.
This does in no way diminish the reason and need to discuss what happened, and everyone's interpretation of it!