Bears at midseason: Is the arrow pointing up or down?

After averaging 138 rushing yards in their first three games, the Bears are averaging 54.3 in their last five to drop from 11th to 31st in the NFL. David Montgomery (32) has rushed for 442 yards on 117 carries (3.8 avg.) in the first half of the season.The Bears’ 5-3 record at the halfway point of the season is tied for their best record after eight games in the last eight seasons.

Yet there’s more doubt than hope, more trepidation than anticipation and more angst than confidence about Chicago’s most-beloved team these days. There’s something about potentially starting four back-up offensive linemen against the Titans on Sunday that appears to be a little unnerving.

And there’s a better…