I have one name for you fellas - Alex Gibbs.
Alex Gibbs was the OLine coach in Denver from 1995-2003. He is considered the architect of the awesome running system Denver employed during that time. He is a very hands on coach who can be viewed as more of a teacher than other coaches. When he left Denver, many people saw it as the end of an era and many wondered how long it would take for the running game in Denver to suffer now that he left - not if it would suffer, but when.
You know who hired Gibbs during the '03 - '04 offseason?
Atlanta. He immediately transformed that Oline into the rushing powerhouse it is today - they finished as the top rushing team in 2004.
If you want to know whats happening to the Denver situation, the conversation begins and ends with Alex Gibbs.
Now I dont have an answer as to when or what event will signal the end to the DEN running system dynasty, but what is clear is that it is only a matter of time.