This offensive strategy is essentially the offensive version of the cover-2 defense. It's not special, it's not explosive, it's a hold-on tight and hope the other guy doesn't beat you. At it's core it's playing not to lose. It is spineless.
The reason the Bears have this lead is that they didn't play this way in the first half. So much for going with what seems to be working. It's clear to me, and anyone with a brain, that the Eagles are daring the Bears to pass, and stacking up against the run. It's time for some slants, deep-ins, and a few go-routes.