It is extremely unlikely that you can have a ticket like that annulled, especially since it was a snow emergency. However, you might be able to spread out the payments over time. While this is not an official position, if you send in a partial payment, my experience has been that the "pay within 30 days" clock gets reset. Granted, last time I tried this was about two years ago but worth a shot. It's not like they'll charge you a higher late fee and the impact of having to making two $50 payments (or what have you) is certainly less than one of $100.