Ambiguity
Could it be just a dream when Jim Sanders was in a coma in the hospital, and the heaven or whoever sent the angel to help him to recover?
I dunno why, I suddenly have this thought after I rethink about it, I guess I'm preconceived with the idea of a dream in Total Recall(which I did NOT watch anytime before I watched this one!)
I don't intend to be offensive, but I have to defend my opinions.