Oh yeah, this thread is kind of dead but...
From my point of view, your rejection isn't especially shocking. I'm sorry to say this, but I have friends who seem much more qualified than you, who have been rejected.
A senior friend of mine will also be attending UCLA with you. He was rejected from Berkeley and UPenn. He had a 3.95+ GPA, a 2300+ SAT, and a likely letter for swimming (a real one, from UPenn), as well as his other EC's. I'd like to see those people who got into MIT with no EC's and worse scores than my friend.