Help me understand this weird line

[kyro]

At one of my books, the spread for both the Indy game and the Dallas game is

-7 (-110)

The moneyline for the Indy/Jax game is -320/+260
The moneyline for the Dallas/GB game is -275/+225

Both home teams are favorites. I don't understand why the MLs are so different. According to sbrforums, +7 (-110) is roughly equivalent to -311/+260 moneylines. Therefore, it looks like there is a ton of value in hammering the Dallas ML.

What forces are at play here? The books do seem to be begging for GB money ATS.