From one guy I read,
"When they last played on December 2, the Raiders opened as 7-point favorites over the Jets. The number quickly went to 6 and when the Raiders won 26-20, a lot of bookmakers got the gong.
This time the number opened at ?6 and fell to 5.5 quicker than you can say, ?Maybe Jerry Jones will get Bill Parcells to consider liposuction.? Such is the gambling life with the flavor of the month. "
Also, from Bestbettor.com, the Pinnacle line opened at 6, dropped to 4 within minutes, then went back up to 5 or 5.5. It looks like the other lines might have opened at 5 so someone got 6 at some point, but I think if you blinked you missed it.
GLTA
TheShrimp