Lou, I also disagree. Lines are pulled, imho, only when theres major uncertainty re: the game. Injury, most often. A variable, they cannot factor in. The boys in the desert, "win" no matter who wins on the field. If they really like 1 side the adjust the line to take in more bets on the other side. If they don't have a strong opinion, the lines are simply a way of leveling the handle. Remember these guys are absolutely playing a long game. They may look at a whole year the way we look at a single wager.
One addendum. This started off as a brutal year, for the house. The old adage, fade the public at 70%+, fell flat. If fade the public fails.....that means house pays out. E.g., if 75% of bets on team A, (25% team B) house loses 50% less the vig. with a team A cover.
Lastly, playoffs, "lighter" lines because of parity. Which is great for the house. Ideal 50-50, which gives them 10% of all bets made, profit. 16 billion to be bet on SB this year. 10% = 160 million. These are just round numbers, to make a point.
BOL 2 all. I hope your team wins.