As I understand it, Gnostic Christians don't in fact believe in the miracles--up to and including that of the physical resurrection of Jesus--as factual events. They look at them in much the same way Wine describes them, as parables and lessons describing deeper philosophical truths.
some things were explained as parables and some were reported as historical facts. the miracles and resurrection were reported as factual events by eyewitnesses...hence they do not lend themselves to being simply spiritual lessons.

This seems, to me, to say "Never mind about logic or reality; this is a mystery of faith." In some ways I'm reminded of it by the current controversy over Biblical literalists taking the word of the Bible over provable science in the question of evolution. Is there even a possible reconciliation between these two points of view? I'm not confident there is.
i agree...i am not sure there is a possible reconciliation between these two points of view.

Let all bitterness, and wrath, and anger, and clamour, and evil speaking, be put away from you, with all malice:And be ye kind one to another, tenderhearted, forgiving one another, even as Elohim for Yahushua the Messiah's sake hath forgiven you. Ephesians 4:31-32