At halftime of Seattle/Carolina. (When books then knew NFC Champ game would be CAR/AZ, the spread was released at -4.5. Then after the second half of Seattle/Carolina, where we all know Seattle came roaring back and Carolina didnt look all that great, all things considered, spread immediately moved to -3 Carolina for NFC Champ Game.
That was a little wordy, but point being after the second half of Seattle/Carolina, the books backed off Carolina right away and dropped line to -3
Heritage had it at +3.5 around halftime and I took Arizona then, thinking I'd never see that again. I think it's just one of those things where had Carolina played a strong second half and won 45-17 or something, everyone in the casinos would be lining up to take the Panthers.