I'm in the exact same situation with Temple. Every school is different, so it couldn't hurt to ask someone at Rutgers exactly how their wait list works. Otherwise keep your fingers crossed and be prepared to lose out a a few hundred bucks from your deposit somewhere else.
Pretty much all the letter said was that a seat could open up between now and the start of the semester, and that I should write them another statement discussing my desire to go to Temple. The final decision whether or not to admit me will be made based "in part on my expressed interest in Temple, and in part on the availability of seats." So maybe all we need to do is convince Rutgers and Temple how much we really really want to go and they'll let us in. Good luck to you too.