What's With These Line Moves?

What's With These Line Moves? Why are some of these lines jumping the way they are? Woke up early this morning to find the Dolphins down to -1, the Giants up to 9 in a lot of places, the Pats up to 10 from 7.5, and the 49ers from -11.5 to 14? 49ers probably don't deserve to be a DD fave to start with. Any news on these games. I know the Texans are in play, and the Giants are the top Hilton contest pick.
49ers have been 14 for days. It was as high as 15' (+105) at 5Dimes that I saw. That Pinnacle incident was actually the line moving from 12' to 13. It hasn't looked back. I agree with your sentiment though, and despite my 5-unit +12 mistake, I put a 6th unit on +14' this morning. (No acct at 5Dimes.)
I get it............
I think I am something like 65-8-2 in my last 75. No, all I play are Fezzik's plays, the sportsmemo newsletter plays and some Eight of Clubs stuff (which is why I took Detroit yesterday -- yesterday). All I know is that I have more money now than I did a year ago.