It hurts, but I have to agree with you. The wheels have fallen off the Bear's little orange wagon. Can somebody find who body-snatched the team that played the first half of the season, because these guys are just imposters...
You can't discount the effect that injuries have made on the Bears D. I don't remember all the names, but they've lost one of their starting safeties, their starting nose tackle, and a linebacker. I believe there are a few other important injuries as well.
The Bears D has weakened owing to attrition. We New England fans know all about that. We've been fairly fortunate regarding injuries so far this season.