Decline Admission after Submitting SIR?

I submitted the SIR a couple of days ago but I just got off the waitlist to one of my dream schools! I’m wondering if there’s a way to cancel the SIR through the Berkeley portal?
(I also didn’t pay the $100 deposit yet…wanted to wait until the last day in case a miracle happened – which it did!)

Bump, in the same situation. I also didn’t pay the SIR.

http://admission.universityofcalifornia.edu/counselors/files/fall-2015-instructions-cancel-sir.pdf

Here is a link with instructions.