It's not that you won't get a good snow year now, but just a slight shift in the odds for it getting lower. Even with a cool-neutral winter you could get good snow this winter. So don't give up hope at all. Also, climate impacts are not very tightly related to ENSO, but rather somewhat loosely related. I'm sure you can check your snow history, along with the ENSO state, over the last 20 years and see that is the case.