im pretty sure thats the way it works...i always just bet listed anymore, cuz thats what happened a few years back, and i got a much worse line, and still lost, and it made me mad, so i just started going listed......
but maybe its changed...my bets today were after the change, so i dont know
well the thing is, say you bet 130 to win 100, if the line moved to -200, they cant make your wager amount more, so you would now have 130 to win 65....your risk would be the same, your reward would be less