All of the previous statements and reasons made in this thread, at least from my part (and Assertn's, of course) have been from an anime viewpoint.

Fair enough, you have a point with him putting it as a "trap" in the cave.
But do you really think it's something a raving Sasuke who has never shown any prior genjutsu skill would do just like that?
And without the anime not even commenting on it? Naruto is a show in which everything gets explained.

And surely, if Sasuke wanted to delay Naruto, wouldn't there be better genjutsu to show him than a random flashback of things that Naruto already dealt with?