When did Marvin become the fallguy?

[THE PISTONS]

Largely the same management structure is in place that hasn't won a playoff game in 26+ years.

The Bengals made the playoffs for 5 years in a row and fans assumed that some new mystery GM was calling the shots.

At some point, fans ire has fallen on Lewis and somehow the Bengals Management Team remains unscathed.

Thoughts?