I don't know if it happens anymore, but a resident at a community hospital told me that he was offered a pre-match contract during the match process that allowed him to sign out of the match. Also, it's important to note that even if a program tells you that they expect to be seeing you next year because you are their type of resident (which is technically illegal), don't be surprised if you don't match there next year even if you rank the program no. 1 as some program's have been known to purposely mislead applicants so that they will rank their program higher on their list so that they can ensure that the program gets the best applicants possible (while screwing the people who they actually rank lower then they say that they will).