Back in chapter 21 Trelawney started giving a prophecy in the middle of lunch and Dumbledore used the phoenix to teleport her away. If the books are correct this probably made the prophecy useless as anyone in the room could have been the intended recipient, but the true meaning would probably be lost among that large an audience anyway.

As a side note if the he-who-is-coming in the prophecy is Mr. hat-and-cloak then that would rule out Snape and Quirrell. Though I don't think manipulating first year army battles and messing with Granger's head would count as "tearing apart" anything worth prophesying about.